twbs Bootstrap backend, refactor EXT:t3skin and HTML5 output
[TASK] Refactor t3skin / re-work HTML / move to extension
Specific CSS styles that are only needed is a single place should
be held in that specific place also. Moves CSS styles that are only
used in one place to that specific location. These styles are also
only loaded when needed.
Also refactors HTML output of backend modules to be more
HTML5 standard conform. This allows us to remove a lot of CSS.
CSS/less was touched for:
About, About modules, Wizards, Permissions, Setup, TS Template.
Reviewed-by: Christian Kuhn <email@example.com>
Tested-by: Christian Kuhn <firstname.lastname@example.org>
Reviewed-by: Frank Nägler <email@example.com>
Tested-by: Frank Nägler <firstname.lastname@example.org>
Reviewed-by: Markus Klein <email@example.com>
Tested-by: Markus Klein <firstname.lastname@example.org>