Introduce "bower" as a component dependency management for
loading all JS/CSS related libraries.

This patch introduces bower to install web-related components
into EXT:core/Resources/Contrib/components/ which is excluded
from the Git Repository.

The main LESS file of t3skin, which is currently the only place
where the current third-party library (previously from composer)
were used. The code is adapted accordingly.

The new file .bowerrc holds the information where to install the
components, bower.json contains the dependencies needed.

Currently there are only development-related components in
bower.json.

For more information about bower see http://bower.io.

Resolves: #66042
Releases: master
Change-Id: I4ee7e7a5a47d39a3c66c674556e59643d0ff2336
Reviewed-on: http://review.typo3.org/38238


Reviewed-by: Daniel Sattler <sattler@b13.de>
Tested-by: Daniel Sattler <sattler@b13.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>