BEM-1027 - Added meta-info for all articles
New tags for metainfo
Metainfo: authors -> authors' id
BEM-1102: meta-info update
BEM-1167 change in metainfo
Metainfo: corrections
BEM-1356: Content and metainfo corections
BEM-1356 Правки в мета-информации по результатам встречи на 30.10.2013
remove categories from meta-information
Added meta-info for bemup-yac2013