* Implement visibility choice on board creation;
* Rework the board header bar. Remove links to un-implemented
features;
* Implement a board star counter (visible if the board have >2 stars);
* Define a new icon (a thin cross) to close elements;
* Remove $(document).on('mouseover') event handlers that were
basically fired hundreds of times for nothing, we now define a proper
Tracker dependency to execute jquery-ui plugin initialization only
when something has changed;
* Bug fixes related to list scrolling.
Both sandstorm and LibreBoard have significantly evolved since the
last release of LibreBoard on sandstorm. This commit:
* adds some more attributes on the sandstorm manifest
* introduces support with the sandstorm sharing box
* uses a server redirection to point to the board document
* hides the top shortcut bar on sandstorm
Fixes#163.