Minor - Format code.
Improving UI in the group edit page see BT#5768
Minor - fixing tab order.
Adding PDF export to the group overview page see BT#6985
Removing useless make_clickable see BT#7002
Minor - formatting code.
Improving UI in the group tool see BT#6985
Updating action bar icon order see BT#6985
Adding access_url_edit_course_category_to_url.php file in order to manage course category by URL see BT#6195
Minor - fixing whitespaces fixing wrong auth_source value.
Minor - format code
Do not edit DRH relationships when importing by CSV see BT#6770
Minor - fixing URL redirection.
Improving UI see BT#5768
Improving UI see BT#5768
Fixing delete button see BT#6195
Fixing course_category update code see BT#6195
Fixing updating url - course_category see BT#6195
Minor - format code
Merge pull request #19 from chamilo/1.9.x

1.9.x