Fix russian translation

Add translation `close` label. Fix `monthsFull`, because in Russian it is customary to write the month in lowercase letters.

`grunt --verbose --force` done but with warnings.

```
Running "jshint:demo" (jshint) task
Verifying property jshint.demo exists in config...OK
Files: demo/scripts/demo.js -> demo
Options: force=false, reporterOutput=null, jshintrc

   demo/scripts/demo.js
   1173 |    picker_set__enable_disable_in_range_date = $input_set__enable_disable_in_range_date.pickadate( 'picker' )
             ^ [W098] 'picker_set__enable_disable_in_range_date' is defined but never used.
   1182 |    picker_set__enable_disable_in_range_time = $input_set__enable_disable_in_range_time.pickatime( 'picker' )
             ^ [W098] 'picker_set__enable_disable_in_range_time' is defined but never used.

>> 2 errors in 1 file
Warning: Task "jshint:demo" failed. Used --force, continuing.
```