Fix SQL injection threats and replace SESSION variable with api_get_user_id - refs #7272
Add pagination to course session catalogue - refs #7273
Merge branch '7273' of https://github.com/danbarretodev/chamilo-lms into danbarretodev-7273
Minor - Update PHPDoc
Update Improve documentation, Delete unused function - refs #7273
Update pagination design - refs #7273
Updating css base conflict with didactic progress in using accordion, which is displayed within the current

Conflicts:
	main/css/chamilo/default.css
add img icons windows_list update

Conflicts:
	main/img/icons/32/window_list.png
	main/img/icons/48/window_list.png
	main/img/window_list.png
	main/template/default/auth/sessions_catalog.tpl
siderbar well update
Improve the view of list courses - refs #7275
Update course session catalogue design - refs #7275
Add function to get name tools from category course - refs #7275
Add security token to course copy tool - refs #7275
Update attendance.lib.php
Merge branch '7273' of https://github.com/danbarretodev/chamilo-lms into danbarretodev-7273
Temporarily remove courses catalog's random pick to avoid bug with pagination - refs #7273
merge
Fix query error in previous commit - refs #7273
merge
Fix misplacement of $action variable processing - refs #7275