Update templates/base.html

added centering tags; need to be tested
commiting login.js and login.html changes for patrick
small change to login js
sarah has made login work! register is a bit buggy tho
changed a few things in app.py - sarah
patrick working on search.js and search.html
small change in search.html
sarah making history page semi-work -- will finish once search is done
app.py now uses stored username rather than needing it to be passed through js
Merge branch 'master' into jasmine
patrick working on search.js - favorites
Merge branch 'patrick' into jasmine
added nav bar and made it pretty :D
making clearfavorites and clearhistory work - sarah
changes to app.py
favorites.js added, can now remove a favorite - sarah
small changes in app.py
added a get playlist by title method - sarah
python didn't like one line - sarah
search.js and search.html are almost done