Possible connection of ICTax Switzerland

[hugograf]

Which part and what Version?
Version: 0.x.x
[x] Internal structure (user should not notice)
[x] Improvement for the user

Problem:
There are ETF's that retain dividends. Thus, this income cannot be recognized in GT. In Switzerland this income has to be declared in the tax return. This can be determined via ICTax.

Solution:
A connection with JSON to ICTax could be possible, further clarifications are necessary.
Notes: "https://www.ictax.admin.ch/extern/api/authentication/session.json" from it would have to be determined somehow the "JSESSIONID" and "X-CSRF-TOKEN", otherwise the POST request for "https://www.ictax.admin.ch/extern/api/security/security.json" will not work.