Extended telephone regex

(Did this for the h5validate library so updating this library as I know
the regex is used here also)

Extended the numbers allowed in brackets so (0)1224 and (01224) are
allowed
Made the extension part any case of 11 characters so 'EXTENSION 5555' is
allowed
Removed {1} from telephone regex as this is already implied so therefore redundant code

Streamlined the telephone regexes for all language files
Merge pull request #721 from u01jmg3/master

Extended telephone regex