Flutter unit testing

[Edwinexd]

Continuous help/suggestions on what to test would be appreciated

[Edwinexd]

Plan rn: components:

• profile_avatar not doing
• skill_level_slider ✅

views:

• signup page (email error popup) ✅
• all group pages (tre olika typer av sortering testas) ❌

(root):

• home page countdown widget? w✅

[Edwinexd]

ready to merge