Changing email causes discrepancy between frontend and backend

[dongcarl]

Steps to reproduce:

1. Go to "Config" tab of profile page
2. Change email
3. Hit submit
4. Click on another tab
5. Go back to "Config" tab
6. Email appears to be unchanged
7. Reload page
8. Email appears to be changed

Expected behavior:

1. Go to "Config" tab of profile page
2. Change email
3. Hit submit
4. Click on another tab
5. Go back to "Config" tab
6. Email appears to be changed
7. Reload page
8. Email appears to be changed

[wbobeirne]

Ah yeah this is related to #17, there isn't really a proper data store for this stuff so cache invalidation is a pain in the butt on the frontend. I'll fix this by just re-requesting fresh user info each time until that gets worked out.