Increase the size of various varchar fields based on user feedback!
Change session ID field to varchar(256) - to support 1024-bit hashes
Make collation consistent - utf8_general_ci.
Centralize link token management. CSRF protection for important links.
Encode url used on link redirect and add CSRF protection token.
CSRF protect logout links
Add CSRF ( and open redirect) protection
Merge pull request #445 from protich/issue/427

Increase the size of varchar fields
Merge pull request #448 from protich/issue/428

Issue/428
Merge branch 'develop' of https://github.com/osTicket/osTicket-1.7 into develop

Conflicts:
	include/client/header.inc.php
	include/staff/header.inc.php
	setup/inc/class.installer.php