Minor Suggestions to Finalise First Deliverable

The current state of the project is great and the frontend is looking awesome!

Here are some minor adjustments and additions I think we should make before committing the first deliverable:

Signup link on /login should link to /signup
Change "Log in" to “Login” on /login
Change the central heading to “Guess the Sketch” on /guess
Omit the colon next to "are you ready", correct "are you ready" capitalisation, correct "time is ticking" capitalisation on /guess
Add all links to nav bar in layout.html

Super quick fixes so I'll make a PR now, but definitely happy to discuss :)

ickerio / cits3403