Feature/timeline crud

Implemented adding new events to the timeline.

Some UI thinkg are still missing, like disabling "addEvent" button before dataSet is loaded etc.

First I would like to modularize everything: separate eventLoadingForm, newEventForm or something like this.

Please don't merge until not finished by me :P
woow hold on :D I will add less to project and then group all those files because it looks really ugly. it will be also good for performance because we will limit 'network' requests