Added locale info for users.
i18n support (does not work yet).

No experience with babel yet :(
Translations updated.
Most texts translated to German.
Translations improved.
Remaining strings translated to German.
Encoding issues fixed.
Merge branch 'i18n' into develop

Conflicts:
	.gitignore
	setup.py
New values in tabular editor are now stripped.
Int and Str values properly coerced in tabulator.
It is now possible to change languages.
Added skeleton translation file for "lu".