PLA-986 make thumbnails acquiring reusable
Merge branch 'dev' into PLA-986
PLA-986 adding tests for new method
PLA-984 Articles/New api
PLA-984 Fixed output
PLA-984 code elegance
PLA-984/PLA-985 Added limit param
PLA-984 fixed cache
PLA-1004 introducing RevisionService method for acquiring first revision data, add method in ArticlesApi to parse avatar and user name data
Merge remote-tracking branch 'origin/PLA-984' into PLA-1004

Conflicts:
	includes/wikia/api/ArticlesApiController.class.php
Merge branch 'PLA-984' into PLA-986
PLA-984 fixed output params
Merge branch 'PLA-984' into PLA-986
PLA-984/ PLA-986 added thumbnails
Merge branch 'PLA-984' into PLA-985
PLA-987 ApiDocs documentation for Articles/New
PLA-987 ApiDocs typo fix
PLA-984 api search result key can be passed as param
Merge branch 'PLA-984' into PLA-1004
Merge branch 'PLA-984' into PLA-985