clean up
use LyricsApiBase instance to get db adapter config
WIP; added method to get recent changes, a unit tests
WIP; added grouping by deletions and others, some unit tests
removed hardcoded date, added one more test case for rc_cur_id === 0
removed method which is not needed
page ids is everything we need right now
deleted an unnecessary method and removed tests for it, started working on updates
Merge branch 'dev' into lyrics-api-update-index
added getConfig() method because we resigned from LyricsApiBase::getConfig() approach
WIP: removed article category setters and getters, added new method which gets only artist pages
WIP: added new method getArtistPageId() which is used to change results with recently changed pages to an array with artist pages only
added some unit tests
added more logging
CONN-471: Respect RegPerEmail limit and Phalanx in UserSignup::sendConfirmationEmail
Removed whitespace
CONN-471: Added comment for withinEmailRegLimit
fixes in convertIntoArtistPages(), changes in getArtistPageId() and one more unit test case added
PLA-1318 indexer changes, adding exact match fields for title and redirects
fixed SolrAdapter::saveArtist()