Changes in database schema gor user background comments and likes. API methods for user background likes and comments add and get. Popup modal window on profile page with comments and likes
Improved documentation of the project, refs #309
Modified database queries in API methods to increase performance
Removed pins from index page when not logged in.
Added time output of requests to api. Added API method for removing profile photo
Adddded API method for removing profile background
Implementing API methods for removing background and photo of user to site
Merge pull request #107 from OlegYarosh/live

BG changes, home page changes, speed improvements