Set compilation based only on VA
Rename compilations tag
Add NEWS.txt update.
Address Michael's comment
Support the Jaikoz 'artists' tag, with help from @night199uk and @zas
Merge branch 'master' of github.com:musicbrainz/picard into artists-tag
Merge branch 'master' of github.com:musicbrainz/picard into artists-tag
Merge branch 'sophist_compilation_TCMP_adjustments' of git://github.com/Sophist-UK/picard into Sophist-UK-sophist_compilation_TCMP_adjustments
Revert "Merge branch 'sophist_compilation_TCMP_adjustments' of git://github.com/Sophist-UK/picard into Sophist-UK-sophist_compilation_TCMP_adjustments"

This reverts commit 2f7581b19a2e868147a144a1cb91830ae55eb37e.
Merge branch 'sophist_compilation_TCMP_adjustments' of git://github.com/Sophist-UK/picard into Sophist-UK-sophist_compilation_TCMP_adjustments

Conflicts:
	NEWS.txt
Remove an unused import
Make the usages of enabledSlot more readable
Ignore hidden files and directories based on `show_hidden_files` option.

http://tickets.musicbrainz.org/browse/PICARD-528
Add "Ignore files according to show_hidden_files" to NEWS.txt
Move STYLESHEET_ERROR to parent class as it may be used in any page
Add ignore_regex option to Advanced options

Filepaths matching this regex will be ignored.
Add "ignore_regex ..." to NEWS.txt
Merge branch 'master' of github.com:musicbrainz/picard into artists-tag
Fix missing QtCore import
Remove unused imports