JS bug tipmessage return false

- prevent returning on top of page
Disable links while AJAX
Responsive AssignOtherInfo
Bug Android browser PDF download failed

- intents:
-change case of the extension to PDF
-remove authentication

Wkhtmltopdf:
-place header application/octet-stream in last position
-correct typo octec-stream
-remove trailing semicolon after filename
Bigger design
Correct typo
Allow Parent Course Period popup
Escape course title & period title
Correct Parent Course Period translation
Replace "acudiente" with "padre" in spanish help
$modname = $program