Renamed profiles to presets. Added preconditition.

db.coffee

@@ -4,10 +4,6 @@ Memcached = require 'memcached'
 Memcached.config.maxExpiration = 86400
 memcached = new Memcached(config.MEMCACHED_SOCKET)
 
-# Create MongoDB connections
-tasksCollection = null
-devicesCollection = null
-profilesCollection = null
 
 dbserver = new mongo.Server(config.MONGODB_SOCKET, 0, {auto_reconnect: true})
 db = new mongo.Db(config.DATABASE_NAME, dbserver, {native_parser:true, safe:true})
@@ -23,8 +19,8 @@ db.open( (err, db) ->
     exports.devicesCollection = collection
   )
 
-  db.collection('profiles', (err, collection) ->
-    exports.profilesCollection = collection
+  db.collection('presets', (err, collection) ->
+    exports.presetsCollection = collection
   )
 )