Develop for WET/Github guide page

@thomasgohard 
This is the last PR for the proposal of a new page that involves everything in "developing for WET". Currently, there are pieces of information on how to develop for WET all over the site that I think should be on one page. Feel free to use it or make some changes to it, but I do believe there needs to be a guide to aid users in developing/using Github. Also, having "Guides" would be ideal in the near future as testers have mentioned that they like this idea in our last usability testing. Here's our version regarding "Guides" if you're interested: http://burgvan.github.io/wet-boew-student-project/dist/unmin/docs/webguides-en.html




Remove the first sentence, it adds nothing. Let the content speak for itself.

The second sentence should be better integrated into the content. Where is being behind a proxy an issue? That's where that sentence needs to appear.