Extend money_widget and percent_widget

Input fields are streched to 100% width in the new SonataAdminBundle, but this
doesn't take into account any extra text such as percentage signs or currency
symbols, causing either the symbol or the input field to be pushed to the next
line.

Using Bootstrap's input-group we can prevent this, and also render the symbol
in a nice little box.

The money widget respects the money_pattern variable, so the currency symbol
will be rendered before or after the input, depending on the locale or the
given money_pattern.
cascade form name for embedded form
Merge pull request #2498 from nicwortel/moneytype

Override money_widget and percent_widget
fix #2499
fix regression with missing key in template
Updated spanish translations.
Merge pull request #2500 from phansys/spanish_translations

[Translations][ES] Updated spanish translations.
typo bower install

Replaced "bower require" with "bower install" (little mistake with composer I guess)
Merge pull request #2503 from dizda/patch-1

typo bower install
Update dashboard.rst
Merge pull request #2507 from oopsFrogs/patch-1

Update dashboard.rst
Update standard_layout.html.twig

When resizing to xsmall devices in bootstrap the breadcrumb is breaking the mobile responsive layout (all of the actions, etc fall over to the next line and no longer line up with the background). 
Ideally the breadcrumb div would be updated to sit within a variable width container that would allow the user to pan left and right with the mouse/their finger to read the entire breadcrumb on mobile devices. If I get a chance I can look at integrating this, but for the time being I suggest wrapping it up in <div class="hidden-xs"></div> so that it doesn't appear broken to the user on xsmall devices.
Merge pull request #2512 from mrdavecox/patch-2

Update standard_layout.html.twig
Merge remote-tracking branch 'origin/master'