Made marking thing as lendt easier.
User is required for lending
display icon that indicates that a device is overdue
nicer output for empty fields
footer
latest 20 changes are displayed in homescreen.
display more stuff on history view.
Only display edit history when logged in
Also save time when a device was created.
Also display newest devices on home page.
Let device name link to device page and date to the specific revision
display required fields as bold in forms
Save who created a device
Users now have Profilepages with a list what they edited
Switched to custom extended usermodel.
Forgot to change profile to new usermodel
added links to the profilepages
Added output if users hasn't edited anything yet. Fixes #18
replacing old user with new Usermodel
variable fuckup