fix group parameter being ignored in Lang::delete

Signed-off-by: Peteris Rudzusiks <peteris.rudzusiks@gmail.com>
Merge pull request #1402 from peterisr/fix-lang-delete

fix group parameter being ignored in Lang::delete
Merge pull request #1403 from steadweb/1.6/develop

trim the trailing slash on https:// anchor links