NR-935: Move tasks from one kanban column to another

Add jqueryui wrapper for draggable/droppable.
NR-961: Cards (Kanban) plugin
* cards can be moved up / down
NR-961: Cards (Kanban) plugin
* checking in insert/update; jump function
NR-934: Define/configure the Kanban view for every desk

Kanban cards reordering.
NR-961: Cards (Kanban) plugin
* adjusted
NR-961: Cards (Kanban) plugin
* adjusted
NR-934: Define/configure the Kanban view for every desk

Fix card reorder indexing.
NR-879: Newsroom kanban view

Implement master desk view.
NR-828: Add/Edit Task

Move description to modal header.
NR-935: Move tasks from one kanban column to another

Draggable tweaks.
NR-934: Define/configure the Kanban view for every desk

Add styles to task status list.
NR-879: Newsroom kanban view

Add task subtasks to list.
Merge pull request #98 from petrjasek/aap

Add drag and drop for tasks status change plus master view