stemeXe App

* Added a dashboard under the Members tab with date range filters to view performance, attendance, efforts, measures, & activities based on selected dates.
* Users can now sign, revoke signatures, & filter activities by Signed status.
* Users can now leave shared boards.
* Improved board design & a quick "add activity" option in the backlog.
* Redesigned Tag creation flow for better usability.
* Users can now link and filter activities by Higher.