Two new russian dropzones added

DZ Aerograd Kolomna and Aeroklassika Vatulino
Menu z-order issue fix
Dumb localization, css refactoring

Two languages are supported. Just provide a corresponding class to an
element and it will only be shown when the language is active.
A little layout fix

Spacing between language and DZ selectors.
Translation issues fixed

fix #9
Automatic sizing for the Legend section

fix #10
Language selection button defaults to English

bugfix; Russian button was selected by default, however the language was
English: debugging leftovers.
Tab symbols to spaces

4 spaces per tab.
.gitignore adjustment

For convenient development with vim.
More retabbing

Retabbing in about.html
Correct fullscreen layout

Scrollbars don't show up now.
Left-hand pattern support

Also: pattern creation refactoring, a bit easier to understand.
[minor] Pattern starting value fix

Doesn't affect behavior (yet)
Unneeded function removed

And typo fixed
Merge pull request #14 from hr0nix/master

Push changes made by ilyapoz to production