Add Russian language

Add Russian language file
Merge pull request #11 from alexbirukov/integration

Add Russian language
Added collapsable / orderable for the meta keys
Allow assigning values and the use of comma's in your keys/values
Merge pull request #13 from kanduvisla/master

Various fixes:
- Allow Meta Keys to be orderable and sortable
- Allow key's to be assigned a default value
- Sanitize keys
Fix Duplicator layout and behaviour
Fix import options
Fix focus issues
Keep import data consistent
Merge pull request #15 from nilshoerrmann/integration

Fix some layout issues and improved compatibility for XMLImporter
Update README.md
Release 1.1
Merge branch 'integration'