Fix Albums and Similars Artists ajax load (fix #375)
Ajax load php pages only
Updated:

+ Ger translation, lang catalog and translation-words.txt due to latest
changes
+ corrected wrong variable in line 1551 in FR translation catalog
Fix tmp playlist delete, ajax artist edit refresh and similar artists loading
Merge pull request #380 from Psy-Virus/develop

German translation + lang catalog updated due to latest changes :-)
Fix XML error code return with invalid Ampache API handshake (fix #373)
change 'album' to 'albums' for proper grammar
	modified:   locale/ar_SA/LC_MESSAGES/messages.po
	modified:   locale/base/messages.pot
	modified:   locale/ca_ES/LC_MESSAGES/messages.po
	modified:   locale/cs_CZ/LC_MESSAGES/messages.po
	modified:   locale/de_DE/LC_MESSAGES/messages.mo
	modified:   locale/de_DE/LC_MESSAGES/messages.po
	modified:   locale/el_GR/LC_MESSAGES/messages.po
	modified:   locale/en_GB/LC_MESSAGES/messages.po
	modified:   locale/es_ES/LC_MESSAGES/messages.po
	modified:   locale/fa_IR/LC_MESSAGES/messages.po
	modified:   locale/fr_FR/LC_MESSAGES/messages.mo
	modified:   locale/fr_FR/LC_MESSAGES/messages.po
	modified:   locale/it_IT/LC_MESSAGES/messages.po
	modified:   locale/ja_JP/LC_MESSAGES/messages.po
	modified:   locale/nb_NO/LC_MESSAGES/messages.po
	modified:   locale/nl_NL/LC_MESSAGES/messages.po
	modified:   locale/pl_PL/LC_MESSAGES/messages.po
	modified:   locale/ru_RU/LC_MESSAGES/messages.po
	modified:   locale/sv_SE/LC_MESSAGES/messages.po
[FEATURE] Add support for remote beets catalog
[FEATURE] Begin to split up in local and remote catalog
[FEATURE] Add support for synchronisation with local Beets Catalog
Rewrite of the hole interface to Beets because I am not happy with the code.
[FEATURE] Change wrong comment, make some cleanup
[FEATURE] Add License header
[FEATURE] Rework Beets remote interface
[BUGFIX] Improve display in UI
[FEATURE] Rearrange code to avoid code duplication and fixes some small bugs
Also adds lot of PHPDoc.
[BUGFIX] Remove slash between filename and virtual file extension
[BUGFIX] Add filesize to local catalog files
Add the filesizes because without them, ampache will not stream the files.
Change code according to coding guidelines (with php-cs-fixer.phar)
Merge pull request #395 from ainola/develop

change 'album' to 'albums' for proper grammar