Add Tool tips on hover over sidebar icons

[woodbri]

I nice feature would be to add an optional tool tip string that would be displayed on hover over the sidebar icons. Maybe something like putting the tool tip in a title="" attribute of the A tag, like:

<li><a href="#home" role="tab" title="Open the Home panel for Help"><i class="fa fa-bars"></i></a></li>

and using that for the tool tip.