Create PHP versions of layout

Create header.php and footer.php
Add Angular dependancies
Add Angular Service called 'SharedData'
Add Parse to the mix
Add Login button when currentUser is not set
Add Login box markup for Reveal modal when Login button is pressed
Add login functionality. No database validation yet
Add signup feature. Connect to Parse database
Add 'Confirm password' logic to signup feature
Clean up State logic for Signup, Login and Logout functionalities
Add placeholder text to username input for signup modal
Add currentUser data to SharedData object
Add a Parse initialisation script to app.js
Pull system defined interest tags into Activity View
Add ability to toggle interest tags
Save user's interest tag selection
Pivot to Survey based approach
Adding new 'Something interesting'. Updates the activity feed
Add tag data to new feed post
Display tags on activity feeds