Install Modernizr using bower (dev version)

TO DO: Use grunt-modernizr later to scan the project and trim out anything that's not used to produce a lean version of the library
Load Modernizr library in the layout
Don't show the add question tooltip on touch-based devices

Tooltips are inherently mouse-centric. The tooltip also causes other usability issues: there is no tab key on a lot of mobile keyboards; the tooltip results in requiring the user to tap the Add Question button twice; lastly, the tooltip doesn't auto hide after the second tap.
On mobile, do *not* automatically set focus to the question editor field after adding a new question

The virtual keyboard cannot be shown via JS, so the user has to tap the question field anyway. However, attempting to set focus via JS results in CKeditor toolbar showing up, which is confusing