Modal window for update create collection fixes #3933 fixes #3906
first blush on moving to buttons and toggling them on and off
Adding button for empty collection creating. refs #3932

Css to hide the cog menu since it contains no relevant items.
changed Add collections link to a button
dashboard buttons floated left and documents div floated right for collections changes
Fixed specs to account for changes in collection dropdown.  Changed stylesheet to correct paging display issue
change the test to pending since the cog is being removed but it has not been moved to a button
Modal window for update create collection fixes #3933 fixes #3906
Merge branch 'SCM-3932' of github.com:psu-stewardship/scholarsphere into SCM-3932