! $context['my_likes'] wasn't always an array (per #890)

Signed-off-by: Michael Eshom <oldiesmann@oldiesmann.us>
Revert "! $context['my_likes'] wasn't always an array (per #890)"

This reverts commit cafc28ac1335919bfde7970962f42c96dba2ee73.
! Guests could not submit multiple votes to a poll without errors. Funnily enough, it did not adversly affect workflow.

Signed-off-by: John Rayes <live627@gmail.com>
! phpDoc updates
Merge pull request #897 from Oldiesmann/release-2.1

! phpDoc updates
Merge pull request #894 from live627/poll

Guest vote fix