Merge pull request #45 from okadri/master

Fixes #42 and #44: When creating/editing a bookmark, modal shouldn't close until save is successful
Moved new bookmark button to its own section, fixed stylesheets accordingly
Fixed #43, icons can no longer be dropped under the new bookmark button
Fixed #46 - modified backbone-modal to respond to enter appropriately and moved out of vendor/assets
Gem update
Created fixtures, and basic tests
Fixes #47: Change 'Create' button to 'Saving' AFTER validations are done
Merge branch 'tests'