Revert ""top" modifier fix. bugid:112218"

This reverts commit e79dbc09f4b99910779d587e067667cf2cd1651f.
Revert "test case add. bugid: 111469"

This reverts commit 7ed96c4d562b7135ca1377ceef98b10dfd0d2e89.
Revert "Comments template tags: can request only 'top' comments bugid 111469"

This reverts commit 61feef230e4732f291fe6178bc4c7edb81098a56.
Patch for support UTF on MSSQL. bugid: 112261
Enabled to use backreference in a filter "regex_replace" at static publishing. bugid:112275
Enable to use some special patterns. "\n", "\t" ... and "$&". bugid:112307
Merge branch 'release-6.0.4' into develop