Better Glass SVGs

[mikeyhogarth]

The glass SVGs (currently sitting in the images/glasses folder) were done by me, very hastily and very poorly. If you think you can do better, by all means go for it :)

Before spending any time though, consult with @laurahogarth on design (the last thing we want is for someone to spend a long time on this and then get their PR rejected because we disagree on whether they're right or not). That said, it is unlikely that anyone will be worse than me so it's probably relatively safe!

The icons need to have the following properties in order to work with the application;

• 24x24
• Only consist of a single path element