Add russian help files

Converted from the original game's translations using
$ iconv -f WINDOWS-1251 -t utf-8
and a rename to lowercase.
Add level title Rusian translations

They got converted from the Russian translation level files, which had these translations as English
Merge branch 'dev' into dev-add-russian

* dev:
  Add translation files for all categories
  Move the generic helpfiles into categories: generic, object, bots and cbot
  Add translation files for all levels
  Move help files to level-specific directories
  Correct the Polish files capitalisation to be uniform across languages
  Move level scenes to level-specific directories
  Add the help/ and levels/ CMake machinery to enable the po-based translations
  Add CMake-Po4a-based infrastructure to allow po-based translation of Colobot help- and scene-description (level) files

Conflicts:
	levels/gen_levels_xml.sh
Dispatch the Russian help files in the level and help directories
Add Russian po-files for all levels
Merge pull request #8 from OdyX/dev-add-russian

Add Russian help and level files