Merge pull request #485 from peterrehm/master

Added id and class option to collection items
Extended the ButtonFormType to allow the usage of icons in buttons
support of collections without rendering of controls-div
correction of an inline comment
added check for .controls-div in collection-add function
Add translation support for widget_prefix and widget_suffix.
Merge pull request #489 from shadypierre/patch-1

Add translation support for widget_prefix and widget_suffix.
Merge pull request #487 from Mercoline/buttontypeextension-icons

Added ButtonFormType to allow the usage of icons in buttons
Merge pull request #488 from naitsirch/collection_without_controls

Support add-buttons of collections without a ".controls"-div
Added additional icon_color property
Added information about the icon buttons to the documentation
Merge pull request #490 from Mercoline/buttontypeextension-icons

icon_color property for buttons and documentation
Merged patch from #318
Merge branch 'master' of github.com:phiamo/MopaBootstrapBundle
Render the custom vars passed

Render the 'attr' option
Merge pull request #491 from neoshadybeat/patch-2

Render the custom vars passed
updated links in composer.js to twbs
Update BootstrapSymlinkLessCommand.php
Merge pull request #492 from tobiaskluge/master

Switch twitter/bootstrap to twbs/bootstrap
Update ScriptHandler.php

Fix new twitter boostrap bundle path.