Enhanced user management page.
* Enabled content negotiation within mvc to automatically convert objects to json if requested (through accept header)
* Gathering user list through ajax request
* Fuzzy search list on firstname, lastname and email
* Enabled divisions field to only accept existing divisions
* Gathering data for division's tag box through ajax request
* Updated readme according to latest changes
* When clicking on user within user's list an ajax request is sent to receive information about the selected user

Todo: Use user information and ensure access controll on which data of the user is accessible by which admin.