#888 Lucene: implemented deletion of old documents; created test for deleting Lucene documents;
#888 Disposing lucene objects when disposing lucene service
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
Sitemap: fixed models DataMember attributes checking test
added UI Issue #853
Merge branch 'dev' of github.com:devbridge/BetterCMS into dev
Merge branch 'dev' into dev-multiple-sitemaps