Merge pull request #3 from lisanmorrison/master

I have drawn preliminary racks and the temperature sensors :)
Merge pull request #4 from lisanmorrison/master

Added shack crates
Merge pull request #5 from lisanmorrison/master

Labelled crates and tidied code
Merge pull request #6 from lisanmorrison/master

Updated the code - more to come tomorrow
Merge pull request #7 from lisanmorrison/master

Further condensed code to enable fast editing
Merge pull request #8 from lisanmorrison/master

Centered entire interface onto canvas and centered text within their corresponding boxes.
Adjusted shack canvas position and further formatted crates.