Language detection and store

[neSpecc]

In UI texts we will use i10n (issue #395). Content (articles, news) will be on two langs:

• Russian
• English

Default language detection

• For all visitors, default language is English
• For Russia, default is Russian

Module should detect Russian visitors and change default language to Russian. Most important parameter is speed

Store default settings somewhere

Change language selectors in templates:

• index page, block News
• article page