treat `params` as php expression for EditableColumn, fix #65
added German translations
Added LV latvian translation
Fixer rusian translation
Addet Yii:t to Emty Text
Merge pull request #76 from schmunk42/german-translations

German translations.
Danke schmunk42,
Thanks schmunk42
Added form Yii bootstrap
Merge pull request #1 from DBRisinajumi/german-translations

Latvian translation, adde form Yii Bootstrap
Merge pull request #106 from DBRisinajumi/dev

Added latvian translation, form Yii Bootstrap, transable Empty 

Thanks for this
Merge pull request #112 from vitalets/dev

Dev