LB-642: Configuration plugin
* some initial code
LB-642: Configuration plugin
* implemented
LB-642: Configuration plugin
* adjusted
LB-642: Configuration plugin
* added testing
LB-642: Configuration plugin
* adjusted on PR comments
LB-642: Configuration plugin
* support plugin loading in sources
Merge pull request #116 from msat-cont/lb-642-configurations

LB-642 configurations
Merge remote-tracking branch 'sourcefabric/aap' into aap
NR-953 : Aloha editor - fix toolbar

implemented aloha's ui-a-la-carte branch