HOTFIX: DDBNEXT-584 second originUrl points to same page
DDBNEXT-387: Institution popup, now only the matching institutions are
counted.
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next into develop
DDBNEXT-332: Breakpoints used in Responsive Design should adopt
Twitterbootstrap,
media queries fixed where different from tb
compare null and ""
DDBNEXT-427: padding in mobile version (max-width 767px) down to 10px
Merge remote-tracking branch 'origin/DDBNEXT-427' into develop
DDBNEXT-428: Font sizes in mobile version
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next into develop
DDBNEXT-561: Log Out" instead of "Logout
Mediaviewer: caption under thumbnails removed
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next into develop
bugfix/DDBNEXT-583: convert each item ID to lower case.

 ElasticSearch by default enables [the standard
 analyser](http://www.elasticsearch.org/guide/reference/index-modules/analysis/standard-analyzer/)
 and therefore use [Lowercase Token
 Filter](http://www.elasticsearch.org/guide/reference/index-modules/analysis/lowercase-tokenfilter/)

 If we store a string FOOBAR, I assume it store the string as foobar and
 therefore if we try to find FOOBAR it return nothing.

 This workaround convert the search string to foobar, before we send the query
 to Elastic Search.

 The next obvious step will be to disable Lower Case Token Filter.
Merge branch 'bugfix/DDBNEXT-583' into develop
DDBNEXT-589: the user can not add item ID more than once to favorites.
remove System.out
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next into develop
Merge branch 'feature/DDBNEXT-589' into develop
Merge branch 'develop' into DDBNEXT-498-2
Releasing for DDBNEXT-498