Container in navbar form constructor

Pass container as parameter in constructor of form type
Changed branch alias to 2.3
Adapted suggests for 2.3
Adjust help_label options for tooltip and popover
align tooltip and popover label before help_label will be rendered
make icon configurable
Moved inline JS to base.html.twig and use twitters data-api 
and data-toggle="popover" or data-toggle="tooltip" to initialize the help
to avoid the jquery-error when the lib is included at the bottom
translation support
fix depends in master

master branch only work whis 2.3 (form) - fix composer
Merge pull request #443 from ivan1986/patch-1

fix depends in master
Merge pull request #441 from paulandrieux/datepicker_translation_support

translation support
Update 1-installation.md
Ignore help tooltips from the tab order

Added tabindex="-1" to the help tooltip in order to ignore them in
the tabindex.

This is supported in Chrome 23, Firefox 18, IE8, IE9, and Opera 12.11
added tabindex exlusion rule from @peterrehn (proposed in #451) for help label tooltip and help label popover
fixed logic in checkbox widget

There was a logical case where a <label> element could have been closed but not opened within the checkbox widget - this change fixes this.
allow 2.3 dev for now
Merge pull request #457 from lsmith77/patch-1

allow 2.3 dev for now
Merge pull request #455 from shieldo/patch-1

fixed logic in checkbox widget
Merge pull request #451 from peterrehm/patch-7

Ignore help tooltips from the tab order
Merge pull request #446 from Antek88/patch-4

Update 1-installation.md
Adjust help_label options for tooltip and popover
align tooltip and popover label before help_label will be rendered
make icon configurable
Moved inline JS to base.html.twig and use twitters data-api 
and data-toggle="popover" or data-toggle="tooltip" to initialize the help
to avoid the jquery-error when the lib is included at the bottom