Revert "UI/UX: context 1/3" since tests fail

This reverts commit f9cebb3c07f89a8e5f5880124b7e7493adc419bb.
dev/reset: make more readable
admin: meta context with meta key definitions section and groups section

Squashed commit of the following:

commit ed25df156659ab8c6aa15851afd01467e9129c58
Author: Michał Podlecki <m.podlecki@op.pl>
Date:   Mon May 26 10:09:09 2014 +0200

    meta context with meta key definitions section

commit cb07a0a5573440fdef6d52b348ecb929fd3d9466
Author: Michał Podlecki <m.podlecki@op.pl>
Date:   Mon May 26 07:34:42 2014 +0200

    admin meta context groups section
admin: fix person edit.

delivers [#71113516]

Squashed commit of the following:

commit ac6b5d4e47e8b3a8e985afca18c7006438cc6f85
Author: Michał Podlecki <m.podlecki@op.pl>
Date:   Sun May 25 09:00:36 2014 +0200

    fix person edit
routes: rename 'media_entries' to 'entries', 'media_sets' to 'sets' and 'media_resources' to 'resources'

also:

- adds redirections for 'legacy' routes
- adds to /doc: a Markdown table of GET routes for viewing on github (plus script to generate it)
Squashed commits:

meta terms sorting adjustments; alphabetical order flag

display meta terms list as closed list if there is more than 16 of them