set the total of rows dinamically - refs BT#8100
Fix general reports, teacher summary report and optimize a query in sessionmanager.lib.php -refs BT#8232
Fix bug, Add function to make unique filename using session_id -refs BT#8186
Update getUniqueFilename to use md5 hash -refs BT#8186
Fix to avoid repeated filenames and delete md5 hash -refs BT#8186
Minor - Added documentation for unsubscribe on status == 2
optimize function to show report - refs BT#8296
Hide the pdf export button - refs BT#8228
Merge branch '8228' of github.com:DeEvo/chamilo-lms-utp into 8228
define variable - refs BT#8228
Replace mb_substr against substr - refs BT#8151
reduce time to refresh the course chat - refs BT#8337
Allow removal of session-course-teacher relationship for session general coach - refs  BT#8228
Merge pull request #47 from DeEvo/8337

8337
Merge branch '8228' of https://github.com/DeEvo/chamilo-lms-utp into DeEvo-8228
Fix equality/identity comparison for strcmp()
Merge branch 'DeEvo-8228' into 1.9.x
Merge pull request #44 from DeEvo/8296

8296
Merge pull request #40 from DeEvo/8186

Fix bug - refs BT#8186
Merge branch '8100' of https://github.com/DeEvo/chamilo-lms-utp into DeEvo-8100