fix potential problem when loading time
add tests for changing all user fields
Add stub fixtures for our model classes
change fixtures to import fields from the model classes instead of duplicating
Add an admin link to the unit tests page
Add a better test of whether a user is internal, check that external accounts cannot have email changed
Add stub unit tests for Task, fix missing table prefix in Task virtual field
Add time test, partly commented out as weird database things are happening
update fixtures for project controller test, no actual testing yet though
Test adding users (fails at the moment)
Rearrange task index topbar for #353
Fix constructor of Time to not break everything
Fix test cases for Time