Ginterpreter succesfully integrated into ChallengeType management
Updated GridView at challenge type
Updated GridView at challenge type + other little fixes
challenge type related search implemented
fixes #5
[x] Giix controller template edited - relation load fixed. 
[x] ChallengeDifficulty implemented
# detail view
# edited left menu icons
Challenge crud update
Challenge Manage improved
+ currentTitle
+ view links
+ MBooleanColumn
Merge pull request #13 from Svobik7/master

Metronic update from master
+ GSortableBehavior added
Metronic-integration branch fixed
Merge commit 'c4e9465eb5c40662d2de781e4ee84ea30b4cd981' into Metronic-integration
Metronic-integration branch fixed
+ MJuiDatePicker
+ rank language
+ rank limits
+ rating
+ difficulties
- ProfileField removed (Controller, Model, Views, dependencies)
# language relation alias issue fixed
# db schema fixed
# basic unit test added
# GInterpretBehavior tab title callback/parser added