Move all settings to settings.yml

We leave the STATUS setting alone, since it's required before rails
boots. The test-specific settings now live in config/settings/test.yml

app/models/client_application.rb

@@ -67,7 +67,7 @@ class ClientApplication < ActiveRecord::Base
   end
 
   def oauth_server
-    @oauth_server ||= OAuth::Server.new("https://" + SERVER_URL)
+    @oauth_server ||= OAuth::Server.new("https://" + Settings.server_url)
   end
 
   def credentials

app/models/request_token.rb

@@ -77,6 +77,6 @@ class RequestToken < OauthToken
   end
 
   def oauth10?
-    (defined? OAUTH_10_SUPPORT) && OAUTH_10_SUPPORT && callback_url.blank?
+    Settings.key?(:oauth_10_support) && Settings.oauth_10_support && callback_url.blank?
   end
 end

app/models/trace.rb

@@ -110,15 +110,15 @@ class Trace < ActiveRecord::Base
   end
 
   def large_picture_name
-    "#{GPX_IMAGE_DIR}/#{id}.gif"
+    "#{Settings.gpx_image_dir}/#{id}.gif"
   end
 
   def icon_picture_name
-    "#{GPX_IMAGE_DIR}/#{id}_icon.gif"
+    "#{Settings.gpx_image_dir}/#{id}_icon.gif"
   end
 
   def trace_name
-    "#{GPX_TRACE_DIR}/#{id}.gpx"
+    "#{Settings.gpx_trace_dir}/#{id}.gpx"
   end
 
   def mime_type

app/models/user.rb

@@ -201,7 +201,7 @@ class User < ActiveRecord::Base
     @preferred_languages = nil
   end
 
-  def nearby(radius = NEARBY_RADIUS, num = NEARBY_USERS)
+  def nearby(radius = Settings.nearby_radius, num = Settings.nearby_users)
     if home_lon && home_lat
       gc = OSM::GreatCircle.new(home_lat, home_lon)
       sql_for_area = QuadTile.sql_for_area(gc.bounds(radius), "home_")
@@ -300,7 +300,7 @@ class User < ActiveRecord::Base
   ##
   # perform a spam check on a user
   def spam_check
-    update(:status => "suspended") if status == "active" && spam_score > SPAM_THRESHOLD
+    update(:status => "suspended") if status == "active" && spam_score > Settings.spam_threshold
   end
 
   ##

app/models/user_block.rb

@@ -32,7 +32,7 @@ class UserBlock < ActiveRecord::Base
   belongs_to :creator, :class_name => "User", :foreign_key => :creator_id
   belongs_to :revoker, :class_name => "User", :foreign_key => :revoker_id
 
-  PERIODS = USER_BLOCK_PERIODS
+  PERIODS = Settings.user_block_periods
 
   ##
   # scope to match active blocks

app/models/way.rb

@@ -206,7 +206,7 @@ class Way < ActiveRecord::Base
 
   def preconditions_ok?(old_nodes = [])
     return false if nds.empty?
-    raise OSM::APITooManyWayNodesError.new(id, nds.length, MAX_NUMBER_OF_WAY_NODES) if nds.length > MAX_NUMBER_OF_WAY_NODES
+    raise OSM::APITooManyWayNodesError.new(id, nds.length, Settings.max_number_of_way_nodes) if nds.length > Settings.max_number_of_way_nodes
 
     # check only the new nodes, for efficiency - old nodes having been checked last time and can't
     # be deleted when they're in-use.