FS#2415 add  to mediamanager (refactor pageinfo() and shift MEDIAMANAGER_STARTED after mediainfo() sets up )
fix missing 'subscribed' key
some unit test, more required
another test todo
Merge branch 'master' into FS#2415
refactor info functions test

pageinfo() test no longer required, unit test committed elsewhere and
verified against both previous and updated versions of pageinfo() fn.

basicinfo() and mediainfo() tests separated each into their own test
file.
(incl. the refactored file)
make  global, ensure  created in mediamanager is global and merged with any pre-existing
include image info in  in detail.php; ensure  populated before DETAIL_STARTED event
fix comment grammar
Merge pull request #180 from splitbrain/FS#2415

FS#2415, add $INFO to mediamanager