bump cdn library versions

* leaflet 0.7.2
* jQuery 1.11.0
* jQueryUI 1.10.4
* lodash 2.4.1
optimize map-key.png (using optipng)
update translations
don't care about certificate issues
update presets
Add hyperlinks for wikidata entries
code style
revert to jQueryUI 1.10.3 because of glitches in theme

this partially reverts 49324a78e4 until jQueryUI ticket #9759
(http://bugs.jqueryui.com/ticket/9759) is fixed.
parse and link wikidata entries for subtags

examples: architect:wikidata, operator:wikidata, artist:wikidata, …
see http://wiki.openstreetmap.org/wiki/Proposed_features/Wikidata
link changeset and user pages in the meta data section of popups
update translations
update presets
Merge branch 'master' into gh-pages
update CHANGELOG