Test project functionality

[luttje]

Taken from #40:

• [x] Test everything manually

Nice to haves:

• [x] Write some automated tests

[bartjroos]

Tested the main lifecycle of;

• Batch-creating groups
• Importing users
• Importing same users again with different group
• Resetting passwords for entire group
• Group expires
• Cleanup users without active groups

Will test creating an app later, when I get to work on the Weeks-api. Will update Weeks-api to use sdclient and test everyting locally.

[bartjroos]

Tested creating an app and loging in with sd-client, all localy

Everything seems ok!