Fix typo: stop method should call stop, not lower...

--HG--
extra : source : e854e50bc14bf9838cba590b312c108eca8199b4
Debug output for Controller when dealing with screens and blinds.

--HG--
extra : source : 5436cdeb810565fde58f4a06a1d40cd2572ea96c
Sending too many commands, too quickly, means the later ones get silently dropped apparently... so introduce a fraction of a second delay before we return.

--HG--
extra : source : 5e65fef538c719cbeb726e0f0e924612e5910175
Initialise this card to all-off.

--HG--
extra : source : aaf804cadf3ed3397e74b995a0a380aac46a8bce
Fix up test to assert initialisation of relay card.
Hide the log viewer under a new "Advanced" menu, which will contain other magic options soon.
Some of these icons are not like the others...
Unused import.
This button is for quitters.
This turned out to be a pretty useless level of indirection.
This button would have been useful yesterday evening.
Click through new Advanced menu in test.
Tests for projector controls (and fix a bug therein)