Syntax errors in SQL

Signed-off-by: enyst <engel.nyst@gmail.com>
Add text for fetch mail from IMAP scheduled task

Signed-off-by: enyst <engel.nyst@gmail.com>
Tasks titles with capitals

Signed-off-by: enyst <engel.nyst@gmail.com>
Typo

Signed-off-by: enyst <engel.nyst@gmail.com>
PostgreSQL doesn't have MyISAM tables

Signed-off-by: enyst <engel.nyst@gmail.com>
Fatal error on include file.

Signed-off-by: enyst <engel.nyst@gmail.com>
Fix error undefined function.

Signed-off-by: enyst <engel.nyst@gmail.com>
Merge pull request #693 from emanuele45/write_sg

One less superglobal rewritten
Merge pull request #681 from emanuele45/admin_session

Send back to the referer?
Merge pull request #686 from engelnyst/errors

Errors
Merge pull request #672 from emanuele45/message_preview_drop

Message preview drop
Move the security checks to a layer?

Signed-off-by: emanuele <emanuele45@gmail.com>