:package: /admin/ :: Several updates

+ Added admin/tmp to .gitignore
+ Added userData, projectData and issueData functions for RainTPL
modifiers
+ Added function for debug mode setting: MySQL debugging
+ Added <hr /> tag style
+ Changed project information box layout
+ Projects now have a shortcode. Issues are displayed like AB#1 (where
AB is the shortcode of the project and 1 the id of the issue)