Merge pull request #44 from ChiSamurai/master

Bugfixes for Dynatree
Replaced 'commons/' with $config:mods-commons.
Deleted unused variable.

References #640.
Replaced other occurences of 'commons' with $config:mods-commons.

References #640.
Merge pull request #45 from claudius108/master

Replaced 'commons'
Switched from Dynatree to Fancytree