Add full randomization for teaser set elements
meta_data: fix multiline string handling in show&edit, move detection logic into model
fix previous_id_redirect: remove binding.pry
controllers: set, entry: make sure `check_and_initialize_for_view` is done consistently

also fix an old-id-redirect
Admin interface: filtering zencoder jobs by failed state
Improve error handling, add tests
Add tests for media set highlights, cover and content display mode
Admin interface: delete groups, merge inst. groups

Admin interface:
- add delete button in groups list
- ability to merge institutional groups

Squashed commit of the following:

commit c094cf96363080950283a10cf8dc15eaac4e8ef0
Author: Michał Podlecki <m.podlecki@op.pl>
Date:   Wed Nov 12 13:05:25 2014 +0100

    Admin interface:
    - add delete button in groups list
    - ability to merge institutional groups
Add cider_ci-rails gem
ui: relations: visual fixes

fixes [#82170730]

Squashed commit of the following:

commit 0f9821cf0f8ab3415638506fb8b8f91f52aff59c
Author: Max F. Albrecht <1@178.is>
Date:   Wed Nov 12 12:36:32 2014 +0100

    adjust test

commit da447ad784e8cf06621066db55f37aff280b8d72
Author: Max F. Albrecht <1@178.is>
Date:   Wed Nov 12 12:27:47 2014 +0100

    ui: css: fix .ui-resources.grid.horizontal vertical alignment

    li items were ragged if they had content of different lengths

commit 30eb306ed1d29e0d7a4873f43d054d0f5063cd3a
Author: Max F. Albrecht <1@178.is>
Date:   Wed Nov 12 11:54:38 2014 +0100

    relations: resource-link point to #show, not #relations

commit f0bd600630394da7c1b41d29364ad41c126ccbce
Author: Max F. Albrecht <1@178.is>
Date:   Wed Nov 12 11:54:11 2014 +0100

    relations: remove line breaks from description
extend personas data with more favorites
gem pry-rails -> pry for rails console
update Gemfile.lock with pry-rails
 ui: implement new action bar for Entries, Sets and Filtersets

- re-order all the buttons/menu entries
- move login button to top nav for consistency)

Squashed commit of the following:

commit 69b34cb427c957f8d434e839cead0d887256994f
Author: Max F. Albrecht <1@178.is>
Date:   Thu Nov 20 15:36:01 2014 +0100

    also port the new menu to filter_set

commit 073a840567fc394b595ac5c3891b5422462dafef
Author: Max F. Albrecht <1@178.is>
Date:   Thu Aug 21 17:47:15 2014 +0200

    fixing tests

    (also some real bugs)

commit 652d92d345011e2315bc95285044d7d2c7c7abc7
Author: Max F. Albrecht <1@178.is>
Date:   Thu Aug 21 16:54:47 2014 +0200

    resources: actions menu: adressen without 'verwalten'

commit b1b044bfe0773f65fbdf2b41d54bc8c13fb34eb1
Author: Max F. Albrecht <1@178.is>
Date:   Thu Aug 21 16:54:24 2014 +0200

    resources: actions menu: move up 'organize'

commit 0d0169c7de0ac66f8653d0349dcd5907803ada87
Author: Max F. Albrecht <1@178.is>
Date:   Thu Aug 21 16:53:00 2014 +0200

    simpler login_action, move to top navigation

commit 55cd72c9220873454df7a7adf0a45d73084c38c8
Author: Max F. Albrecht <1@178.is>
Date:   Tue Aug 5 17:51:24 2014 +0200

    ui: implement new action bar for Entries and Sets
Add export access for guests
Add access for public users to cutom urls page (if have such permission)
ui: relations: visual fixes 2

.ui-grid.horizontal now works with elements of different height.

This reverts parts of commit 105522c0ae610807a745ff37adea264f33cd56d9.
new personas dump including filter set group permissions
Set version to 2.6.0; update gems; integrate cider-ci_support gem