*7902* let Sitehandler handle updateSidebar requests
*7957* strip html from source parameter
[PKP bugs] doc fix
[OJS.de lucene - part II - ap1] Enable the JS framework in OJS (and other PKP apps).
[PKP bugs] Upgrade JS classes to conform to the newest version of the linters/compiler
[OJS.de lucene - part II - ap1] Initial search UI re-design.
[OJS.de lucene - part II - ap2] Autocompletion: Create a backend AJAX service.
[OJS.de lucene - part II - ap2] Autocompletion: View level binding of AJAX handler via JS framework.
[OJS.de lucene - part II - ap11] Improved Solr Administration: per-journal re-indexing (CLI).
[PKP bugs] fix autocomplete handler reference to outdated class member
Merge pull request #26 from jerico-dev/dev-stable

Please pull Lucene search features into stable release.
*7969* Fixed showing form error notifications only in the next request
*7970* correct cast for authorId
*8004* Fixed notification subscription errors
*8004* Subscription SQL error
removed duplicate key from en_US locale
*7846* updated de_DE locale (according to commit 282a908776)
*7846* updated de_DE locale
removed tiny error from en_US locale
*7846* another update to de_DE locale