ISSUE 004145: Added export tab in the navigation menu of Content usage
ISSUE-3731: Moving resize_image() to include/lib/vital_funcs.inc.php
ISSUE-3731: Removing function from themes/simplified_desktop/social/profile_picture.html.php
Merge pull request #57 from mancoolgunda/CSV_export_content

ISSUE 004145: Added export tab in the navigation menu of Content usage
ISSUE-3731: Removing resize_image() from other files. Function resize_image() in vital_funcs.inc.php returns true if successful, false otherwise.
ISSUE-3731: Adding docblock with the function resize_image().
5251 added captcha to contact support form
Merge pull request #59 from geetakshi/ISSUE-3731

Issue 3731: Moving resize_image() to include/lib/vital_funcs.inc.php
ISSUE-5257 : Fixed redirection while uploading profile picture without choosing any photo.
5262 - change relative path to question_import.php to absolute
Merge pull request #62 from dhruvj/ISSUE-5257

ISSUE-5257 : Fixed redirection while uploading profile picture without choosing any photo.
5096: Fixed a security issue with the tool manager index page to prevent the file specified in url from being executed as php code. Also fixed indentations and replaced tabs with spaces in a few scripts.
Merge branch 'master' of github.com:atutor/ATutor
5096: Updated the module development documentation to reflect the usage of $this->_tool and $this->_content_tools in the module.php.
5258: Fixed the sql injection issue with the session token variable when the browser cookie is disabled.
5265, 5259: Fixed the issue on the test view results page that wrong result icons are displayed in front of answers.
Cleaned up a un-used script.
Updated developer guideline to remove hard tabs option from the indentation convention.
Updated the occurrences of SVN to GIT.
Wrong field being matched - there is no courses field in courses ($enrolled_courses is a list of course_id's, in python list format)