feat(service): add $translate.instant() for instant translations

the api of `$translate.instant()` is the same `$translate()` except not returning a promise and being not deferred

feat(service): add $translate.instant() for instant translations

the api of `$translate.instant()` is the same `$translate()` except not returning a promise and being not deferred
feat(filter): filter now use $translate.instant() since promises could not use