[TASK] Move SASS support to twbs/bootstrap-sass
	jlong/sass-bootstrap has now reached EOL due to the release of the official Bootstrap SASS package.
	Refactored Bootstrap dependencies to twbs/bootstrap-sass.
force error flash as danger as well
include error into merge rotation
Show "add" button for collections only if required

Show "add" button for collections only if "allow_add" is not false.
Changed @icon-font-path to relative path

Changed @icon-font-path to a relative path so that cssrewrite will work. This should fix broken icons because of a broken absolute url.
Form Actions Support

This allows you to add buttons in a collection that prints them all together.
Merge pull request #791 from rdohms/form-actions

Form Actions Support
Merge pull request #789 from mweimerskirch/patch-4

Show "add" button for collections only if required
Merge pull request #790 from nnscr/patch-1

Changed @icon-font-path to relative path
[docs] added instructions for cssrewrite

Just extended the docs to show how to configure assetics cssrewrite. See #790
Merge pull request #792 from nnscr/patch-1

[docs] added instructions for cssrewrite
Fixed issue with widget help popovers not working on focus trigger

If the trigger for a widget help popover was set to 'focus' then the popover was not displayed. This was due to the fact that the data attributes are set on a surrounding div element rather than on the widget itself.

This change sets the 'data-selector' attribute to target the actual widget, by default. It is possible to override this and set a selector through the field (or global) configuration.

This change is a fix for issue: phiamo/MopaBootstrapBundle#793
Merge pull request #794 from marshmn/patch-1

Fixed issue with widget help popovers not working on focus trigger
Merge pull request #784 from MisatoTremor/master

[TASK] Move SASS support to twbs/bootstrap-sass
Add a space between label_attr.class and label_attr_class
Merge pull request #800 from jamesmoey/issue-799

Add a space between label_attr.class and label_attr_class
Fixed display of label suffixes
reorganize templates for support sass and less
Add help with popover translation
Merge pull request #811 from aferrandini/patch-1

Add help with popover translation