Added role functionality

* Added role creation page
* Added helper function to check if user has a role in a game
* Added conditional on game page to display create a role button if the
* user does not have a role and make a move button if the user does.
function to check if user has role returns role instead of true now. This will allow us to pull info from it later
added custom loop to show the role of the author of any given move - currently not working
fixed display of role with each move through adding post type to argument array and reseting post data after the nested loop
fixed minor spacing issues
adds link to the role name associated with each move that goes to the single post default template to show the role name and role description
merges feature/roles into develop