Merge pull request #16 from cburbridge/master

Diagnostics Logging to DB facilities
Merge pull request #18 from cburbridge/master

fixing bug in msg loading
Added a service to save the current values of a parameter into the db
Merge pull request #19 from Jailander/master

Added a service to save the current values of a parameter into the db
Update README.md

Added info about the required version of pymongo.
Battery check script
Battery check update
Link to the wiki added.
Readme added.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	strands_datacentre/README.md