bugfixes and code improvements

- remove settings hints which might be trivial
- remove global variable "always" and use a parameter
- remove wrong encoding from redirect target page object
- simplify inputChoise
- use page.text instead of page.get()
- use page.save() instead of page.put()
- remove unused "-start" option
- remove wrong encodings
- prohibit fallbacks
- exit the script if it is not localized
- rename page with image because it is an ImagePage
- recycle generator identifier
- highlight the image name when it is to be handled only and
  show it only once
- use User class to get the talk page

Change-Id: I5ee94b0631067bf7c2b85fc3f305d840d6a260d0
Merge "bugfixes and code improvements"