Merge pull request #1222 from owncloud/external-icons

External app update
slideshow.js: fitting the image correctly, refactoring, fixing preload issues, ...

I just reapplied my changes to the current master. This is a hack to avoid the effort of rebasing #1106.

It is is fixing #1073, #1074 and some other issues.
Merge pull request #1256 from lupusmeatus/patch-3

slideshow.js: fitting the image correctly, refactoring, fixing preload i...
use close instead of delete icon
fix svg -> png after loading slideshow template
Merge branch 'svgfix-slideshow'
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
Merge pull request #1219 from petemcfarlane/master

Update gallery to remove index offset php warning
Merge pull request #1257 from owncloud/firstrunwizard-close

use close instead of delete icon
[tx-robot] updated from transifex
Pictures slideshow: change loading spinner for proper core one
Pictures slideshow: remove obsolete images
Merge branch 'master' of github.com:owncloud/apps
[tx-robot] updated from transifex
fix an encoding issue in safari
[tx-robot] updated from transifex
limit changing search result link to td.result
focus editor on (re)open, hide notification correctly (fixes reusing editor), use on instead of live