SET PDO::ATTR_EMULATE_PREPARES to false

because PDO handles the parameters for LIMIT-clauses as string and mysql
throws an error
Merge pull request #58 from Chri-s/dont_emulate_parameters

SET PDO::ATTR_EMULATE_PREPARES to false
fix sql queries
beautify
beautify
more prepared statements
more parametrized queries
more parametrized queries
remove file upload for old ie
improve comments
improve comments
more parametrized queries
more parametrized queries
Disabled checkbox for my user in project add form
Added list of closed projects to the desktop
Merge branch 'master' of https://github.com/philippK-de/Collabtive into show_finished_projects