Fix bugs in tests for translated files (#5600)
Fix bugs in tests for translated files (#5600)

* Fix isTranslation regex for xx-xx type langs

* Check if en version of include file exists if loc doesn't

sonyarianto/WebFundamentals,ebidel/WebFundamentals,myakura/WebFundamentals,samdutton/WebFundamentals,agektmr/WebFundamentals,sonyarianto/WebFundamentals,ebidel/WebFundamentals,lucab85/WebFundamentals,lucab85/WebFundamentals,ebidel/WebFundamentals,agektmr/WebFundamentals,lucab85/WebFundamentals,sonyarianto/WebFundamentals,google/WebFundamentals,myakura/WebFundamentals,sonyarianto/WebFundamentals,google/WebFundamentals,google/WebFundamentals,myakura/WebFundamentals,lucab85/WebFundamentals,agektmr/WebFundamentals,google/WebFundamentals,samdutton/WebFundamentals,samdutton/WebFundamentals,ebidel/WebFundamentals,samdutton/WebFundamentals,agektmr/WebFundamentals,myakura/WebFundamentals