Overhaul of front end. Navbar.

Too many changes to list one by one.
Navbar implemented, way some functions are called is changed so navbar
can function properly.
Fixed bug that caused CSS properties to fail to be called.
Still a lot to do.
Merge branch 'master' into experimental
Cleaned up user_page function. Fixed single tweets and hashtag page.

Cleaned up user_page function so less if statements are used, hopefully
making it more readable. Single tweets, and hashtag pages now show the
username in the navbar.
More responsive navbar.

Navbar responds better when resized.
Site Overhaul

Site Overhaul
Merge branch 'master' into experimental