Change navbar references to be relative links instead of direct links

[Mesure73L]

Issue Contents

Due to cross-site scripting restrictions, the navbar will only show when you're viewing a page with the mesure.x10.mx domain. This is not ideal, as we need to be able to code stuff outside of that domain.

[Mesure73L]

Update on this: I figured out a good way to do this and I just need to change the navbar code on every single index.html file excluding Twelve of Code and projects (not that hard, there's only 9). This will be done by the end of today, along with #93 and adding the contact page to the navbar.