replace tabs to spaces at Redmine.pm
tagged version 2.1.5
Removed wrong 2.1.5 tag
Set version to 2.1.5
tagged version 2.2.0
Changelog for 2.1.5 release.
Merged r11041 from trunk.
Changelog for 2.2.0 release.
Merged r11036 from trunk to 2.2-stable (#12615, #12619)
Russian translation changed by Kirill Bezrukov.