Changes int value to bool in edge messages

Sample messages already use boolena values. Changed to bool also in edge
messages.
reverted options with dashes

Python doesn't like '-' in var names.
It sucks to be a newb.
Fixes missing import and closing non opened socket

Added check so socket is closed only if it exists
Added import statement for analog scenario
Adds web sensors graph

Added sensor graphs on front page
Nice but requires data array splicing so it doesn't eat up client memory
after a while.
It's also quite slow. Implementing periodic_sample for digital would
probably help quite a lot.
Fixes signal display in admin

Various fixes to signal display in page
Added pseudo garbage collection
Added flattening for sigital signal
Fixes messages documentation

Fixed digital messages documentation
Fixes store to use command.set/get everywhere

Fixed implementation
Fixed docs
Fixed tests
Fixed js calls
Remove leftover Raspeomix entries