Change location of css files

Channge the location of UserLogin css to CSS file
Change on HTML and CSS

Changes on the user_login.html and UserLogin.css  to login with Tweeter
account
Changes in userpage.html

The style of userpage.html has been change. More changes will be coming
up soon.
Changes in 2 .js files and userpage.html

recommendation.js had a change and delete it.
survey.js  Parses the self rating nutritional data from the form and
updates tags rating and uses the tag scores from the nutritional
recommendation form data to generate a tag string, but it is missing the
code for parsesing the nutritional recommendation data from the form and
updates tags .
userpage.html hada some css changes.
Change in style of  userpage.html
fix merge conflicts
fix merge duplication
Merge pull request #30 from denays/master

Changes to the survey page to add nutrition