Fix spelling of getAllEmbeddings

* Created a fatal for the old spelling to make the transition quick, since it is not difficult
4 jobs for 16-rename-of-getallembedings in 1 minute and 11 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Lint
passed #1549
lint:lint-php5.4

00:00:41

passed #1550
lint:lint-php5.6

00:00:39

passed #1551
lint:lint-php7.0

00:00:39

 
  Codesniffer
passed #1552
codesniffer

00:00:30