Ported 8021q
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Added functionality to OpFormIntro-Helper to add further html attributes (used for class="..." etc.).

All modules until files are updated to bootstrap layout now.
Some directories still contain unnecessary files, offline list is on my desk.

RenderVLANDomainListEditor.tpl.php is ported partially because of misuse of legacy-functions. Needs a fix!

Have a nice day.

Signed-off-by: Alexander Kastius <alexander.kastius@student.hpi.uni-potsdam.de>
Merge branch 'racktables_bootstrap' of https://github.com/acidix/racktables into racktables_bootstrap