Fix general reports, teacher summary report and optimize a query in sessionmanager.lib.php -refs BT#8232
Solve Merfe Conflict
Mock up of report - refs BT#8232
Solve merge conflict
Avance de reportes
Merge branch '8232' of github.com:DeEvo/chamilo-lms-utp into 8232
Solve Bug
add function to get tags
Add function to get exercises score by tag -refs BT#8232