developing admin
added WebBundle assets
added KnpPaginatorBundle
added CountryBundle admin index (maybe need to make some abstract extendable admin template?)
added LocaleBundle
added Locale crud
changed "/admin" to "/backend"
added backend menu sections
update LocaleBundle, add fallback flag
temporary commit
translatable hell
added translatable countries
Merge pull request #34 from velikanov/master

added translatable