Done - minimal weekly planner

Invalid date

* Recurring task groups - set whether a task group is recurring or not
* New color themes - 4 new color themes to choose from (Dark mode coming soon)
* Drag and drop tasks - move, re-order and drag to another group
* Ability to push a single task to next day and no more limits in pushing unfinished tasks.
* Ability to track how many times a task was pushed
* Performance and UI improvements with critical bug fixes