Update branch to version 2.1.0b
Rename per_page/perPage to limit to comply with Serrano refactoring
Merge pull request #193 from cbmi/issue-192

Rename per_page/perPage to limit to comply with Serrano refactoring
Merge branch 'develop' into 2.1

There isn't much to merge but I wanted the new travis-ci file here and didn't
want to duplicate the changes with another commit on the branch.
Merge branch 'develop' into 2.1
Update mock version and add session level version method

The exporter model now uses the session level method to get the serrano version instead of relying on the version number in the exporter response. This removes duplicate parsing code and makes the serrano version available at the highest level to all models.
Add more robust check for Serrano version string
Add a method for checking if Serrano is outdated
Display a warning to the user if the Serrano version is outdated
Remove debug output
Remove unneeded step declaration
Merge pull request #207 from cbmi/issue-196

Add minimum Serrano version setting and warn user if it is not met
Promote the toolbar to a masthead to make it more prominent
Move the export button to the new masthead toolbar
Stick the results navbar to top of the window when scroll hits it
Remove debug output
Remove empty arguments head
Check if view is rendered in onPageScroll

Also, remove a superlative empty argument header
Stick masthead below navbar to remove jump when sticking
Move Serrano warning to separate div

The row-fluid class cannot contain more than 12 columns worth of elements
(per Bootstrap's predefined grid size).