Remove undo menu from card browser.

It is currently not implement and it will just not do anything when
pressed.
Remove change fields menu item.

This feature was not included in 2.0 and right now it just adds a menu
item that does not do anything.

Remove it entirely instead and mark the commented out code so that it is
easier to pick this up later.
Merge pull request #8 from flerda/v2.0.1-browse-field-feature

Remove change fields menu item.
Merge pull request #7 from flerda/v2.0.1-undo-menu-feature

remove undo menu item
Merge remote-tracking branch 'norbert/android_market_2.0' into v2.0.1-dev

* norbert/android_market_2.0:
  Remove change fields menu item.
  Remove undo menu from card browser.
  bump version 2.0.1beta1
  adapt newfeatures
  change icons to red → beta version Revert "change icons back to blue"
Merge branch 'v2.0.1-dev' of github.com:flerda/Anki-Android into v2.0.1-dev

* 'v2.0.1-dev' of github.com:flerda/Anki-Android:
  Uncomment logs for alphas/betas of 2.0.1