diff --git a/ReviewBot.py b/ReviewBot.py
index 96a84a29..65508661 100644
--- a/ReviewBot.py
+++ b/ReviewBot.py
@@ -27,7 +27,9 @@ import cmdln
 from collections import namedtuple
 from collections import OrderedDict
 from osclib.comments import CommentAPI
+from osclib.conf import Config
 from osclib.memoize import memoize
+from osclib.stagingapi import StagingAPI
 import signal
 import datetime
 import yaml
@@ -37,7 +39,7 @@ try:
 except ImportError:
     import cElementTree as ET
 
-import osc.conf
+from osc import conf
 import osc.core
 import urllib2
 
@@ -97,6 +99,16 @@ class ReviewBot(object):
         else:
             self.config = self._load_config()
 
+    def staging_api(self, project):
+        if project not in self.staging_apis:
+            config = Config(project)
+            self.staging_apis[project] = StagingAPI(self.apiurl, project)
+
+            config.apply_remote(self.staging_apis[project])
+            self.staging_config[project] = conf.config[project].copy()
+
+        return self.staging_apis[project]
+
     @property
     def review_mode(self):
         return self._review_mode
@@ -121,6 +133,8 @@ class ReviewBot(object):
         pass
 
     def check_requests(self):
+        self.staging_apis = {}
+        self.staging_config = {}
 
         # give implementations a chance to do something before single requests
         self.prepare_review()
@@ -491,10 +505,10 @@ class CommandLineInterface(cmdln.Cmdln):
         logging.basicConfig(level=level)
         self.logger = logging.getLogger(self.optparser.prog)
 
-        osc.conf.get_config(override_apiurl = self.options.apiurl)
+        conf.get_config(override_apiurl = self.options.apiurl)
 
         if (self.options.osc_debug):
-            osc.conf.config['debug'] = 1
+            conf.config['debug'] = 1
 
         self.checker = self.setup_checker()
         if self.options.config:
@@ -511,14 +525,14 @@ class CommandLineInterface(cmdln.Cmdln):
 
     def setup_checker(self):
         """ reimplement this """
-        apiurl = osc.conf.config['apiurl']
+        apiurl = conf.config['apiurl']
         if apiurl is None:
             raise osc.oscerr.ConfigError("missing apiurl")
         user = self.options.user
         group = self.options.group
         # if no args are given, use the current oscrc "owner"
         if user is None and group is None:
-            user = osc.conf.get_apiurl_usr(apiurl)
+            user = conf.get_apiurl_usr(apiurl)
 
         return self.clazz(apiurl = apiurl, \
                 dryrun = self.options.dry, \
diff --git a/check_source.py b/check_source.py
index 6a2f3395..af595ec2 100755
--- a/check_source.py
+++ b/check_source.py
@@ -25,8 +25,6 @@ class CheckSource(ReviewBot.ReviewBot):
         self.only_one_action = True
 
         self.ignore_devel = False
-        self.devel_whitelist_file = os.path.join(CheckSource.SCRIPT_PATH, 'check_source.whitelist')
-        self.devel_whitelist = None
         self.review_team = 'opensuse-review-team'
         self.repo_checker = 'factory-repo-checker'
         self.staging_group = 'factory-staging'
@@ -133,12 +131,13 @@ class CheckSource(ReviewBot.ReviewBot):
         return True
 
     def is_devel_project(self, source_project, target_project):
-        # Load devel whitelist file if provided and check against before query.
-        if self.devel_whitelist_file and self.devel_whitelist is None:
-            self.devel_whitelist = open(self.devel_whitelist_file).read().splitlines()
-        if self.devel_whitelist is not None and source_project in self.devel_whitelist:
+        # Load project config and allow for remote entries.
+        self.staging_api(target_project)
+        devel_whitelist = self.staging_config[target_project].get('devel-whitelist', '').split()
+        if source_project in devel_whitelist:
             return True
 
+        # Allow any projects already used as devel projects for other packages.
         search = {
             'package': "@project='%s' and devel/@project='%s'" % (target_project, source_project),
         }
@@ -245,7 +244,6 @@ class CommandLineInterface(ReviewBot.CommandLineInterface):
         parser = ReviewBot.CommandLineInterface.get_optparser(self)
 
         parser.add_option('--ignore-devel', dest='ignore_devel', action='store_true', default=False, help='ignore devel projects for target package')
-        parser.add_option('--devel-whitelist', dest='devel_whitelist_file', metavar='FILE', help='file containing whitelisted projects (one per line)')
         parser.add_option('--review-team', dest='review_team', metavar='GROUP', help='review team group added to requests with > 8 diff')
         parser.add_option('--repo-checker', dest='repo_checker', metavar='USER', help='repo checker user added after accepted review')
         parser.add_option('--staging-group', metavar='GROUP', help='group used by staging process')
@@ -258,8 +256,6 @@ class CommandLineInterface(ReviewBot.CommandLineInterface):
 
         if self.options.ignore_devel:
             bot.ignore_devel = self.options.ignore_devel
-        if self.options.devel_whitelist_file:
-            bot.devel_whitelist_file = self.options.devel_whitelist_file
         if self.options.review_team:
             bot.review_team = self.options.review_team
         if self.options.repo_checker:
diff --git a/check_source.whitelist b/check_source.whitelist
deleted file mode 100644
index e47fe4d0..00000000
--- a/check_source.whitelist
+++ /dev/null
@@ -1,13 +0,0 @@
-devel:languages:D
-hardware:sdr
-isv:ownCloud:desktop
-network:cluster:ohpc
-network:mail:zarafa
-Novell:NTS
-network:messaging:matrix
-security:tls
-server:messaging
-server:php:extensions:php7
-system:snappy
-X11:Solus
-devel:openQA:tested
diff --git a/osclib/cache.py b/osclib/cache.py
index 0513a46b..2522ba3a 100644
--- a/osclib/cache.py
+++ b/osclib/cache.py
@@ -8,6 +8,7 @@ import re
 import shutil
 import sys
 import urlparse
+import urllib
 from StringIO import StringIO
 from osc import conf
 from osc.core import urlopen
@@ -108,6 +109,7 @@ class Cache(object):
 
     @staticmethod
     def get(url):
+        url = urllib.unquote(url)
         match, project = Cache.match(url)
         if match:
             path = Cache.path(url, project, include_file=True)
@@ -161,6 +163,7 @@ class Cache(object):
 
     @staticmethod
     def put(url, data):
+        url = urllib.unquote(url)
         match, project = Cache.match(url)
         if match:
             path = Cache.path(url, project, include_file=True, makedirs=True)
@@ -181,6 +184,7 @@ class Cache(object):
 
     @staticmethod
     def delete(url):
+        url = urllib.unquote(url)
         match, project = Cache.match(url)
         if match:
             path = Cache.path(url, project, include_file=True)
diff --git a/repo_checker.py b/repo_checker.py
index 87f0ad00..45132eb7 100755
--- a/repo_checker.py
+++ b/repo_checker.py
@@ -7,15 +7,12 @@ import subprocess
 import sys
 import tempfile
 
-from osc import conf
-from osclib.conf import Config
 from osclib.core import binary_list
 from osclib.core import depends_on
 from osclib.core import request_staged
 from osclib.core import target_archs
 from osclib.cycle import CycleDetector
 from osclib.memoize import CACHEDIR
-from osclib.stagingapi import StagingAPI
 
 import ReviewBot
 
@@ -34,20 +31,8 @@ class RepoChecker(ReviewBot.ReviewBot):
         # RepoChecker options.
         self.skip_cycle = False
 
-    def staging_api(self, project):
-        if project not in self.staging_apis:
-            config = Config(project)
-            self.staging_apis[project] = StagingAPI(self.apiurl, project)
-
-            config.apply_remote(self.staging_apis[project])
-            self.staging_config[project] = conf.config[project].copy()
-
-        return self.staging_apis[project]
-
     def prepare_review(self):
         # Reset for request batch.
-        self.staging_apis = {}
-        self.staging_config = {}
         self.requests_map = {}
         self.groups = {}