change exercise Id format to avoid excel treat it as a date refs BT#7301
show only visible exercises refs BT#7298
check if user is also course_coach to allow exercise qualification refs BT#7316
teacher progress report by course
missing space in query
Now can search session by course and course by session
Now list all courses in reports
Set minimum Input Length = 3
Fix select2
Fix some bug in reports - refs BT#7551
Solve a merge with Daniel
Solve merge with Daniels changes
Allow to select all the sessions for reports
Change the description from session to section
Merge branch '1.9.x' of https://github.com/FraGoTe/chamilo-lms-utp into 1.9.x
Add security to $_GET vars
Merge remote-tracking branch 'beeznest/1.9.x' into 7349_4

Conflicts:
	main/mySpace/index.php
seguimiento d eleccions refs #7315
Merge branch '1.9.x' into 7349_4
Now show exercises in student session detail