My tasks about improving account setup in GSoC 2017

[daquexian]

This issue is for GSoC 2017. I will work on improving account setup during this summer. The following are roughly what I will do for it.

Most of following are from Onboarding Re-work, any advise are welcome :D

I'll update this issue when I make progress.

• [x] Autoconfiguration of email settings
  • [x] SRV
  • [x] Mozilla
  • [ ] Outlook (haven't been tested)
• [x] XOAuth2
  • [x] Google (issue #655)
  • [x] Hotmail
• [ ] Using both client certificates and password auth (issue #793)
• [ ] User friendly certificate error handling
  • [ ] Expired
  • [ ] Self-Signed
• [ ] Certificate viewing and pinning (issue #1798)
• [ ] User friendly TLS / SSL error handling (issue #893)
  • [ ] Only support ssl v3.0 or older
  • [ ] Only support ciphers blacklisted
• [x] Rewrite the UI

It is my honor to take part in the development of K-9 and make K-9 a better modern email client :) I will try my best in this summer.

[philipwhiuk]

I've rebased this code on my fork with the view to manually testing it this weekend and getting it ready for a 5.5xx beta release.