Container in navbar form constructor

Pass container as parameter in constructor of form type
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
Update 1-installation.md
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
added tabindex exlusion rule from @peterrehn (proposed in #451) for help label tooltip and help label popover
Rebased to current master, included all changes
fixed conflicts
Merge pull request #433 from Mercoline/helpLabelFixes

Adjust options for help_label_tooltip and help_label_popover
Fix : attr was crushed in data_pattern|replace

In the concatenation line 112|113|114 attr was not transmitted to the form_widget function.
Merge pull request #459 from sumbobyboys/patch-1

Fix : attr was crushed in data_pattern|replace
Conditional tag for X-UA-Compatible

Please insert <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> into conditional tag, because its not validate for HTML validator, thx

http://stackoverflow.com/questions/14198594/bad-value-x-ua-compatible-for-attribute-http-equiv-on-element-meta