Fixes styles of group module header.
Improves inline event function docs
Adds deflate Apache filter to SVG images
Make sure Apache2 is configured so .ico can be cached
Improved activate/deactivate editor language
Merge pull request #6031 from mrclay/ht_svg

Adds deflate Apache filter to SVG images
Merge pull request #6032 from mrclay/ht_ico

Make sure Apache2 is configured so .ico can be cached
More semantic strings in ckeditor interface.
Merge pull request #6034 from sembrestels/patch-1

Improved activate/deactivate editor language
Merge pull request #6019 from juho-jaakkola/group_module_headers

Fixes styles of group module header.