Added and installed forem
Basic user account management experience brought to acceptable standard.

* Added forem-bootstrap and forem-redcarpet gems.
* Added @import "forem/base" to application stylesheet.
* Added parameter sanitizer for sign_up in application ctrler.
* Removed params delete for blank password suggestion from users ctrler.
* Changed update to update_without_password in update method users ctrler.
* Show method returns current_user in users ctrler.
* Added validation for username including presence and uniqueness.
* Added forem name and email methods to user model.
* User creation takes username from steam alias or otherwise sets to uid if taken.
* Local users see password fields and omniauthed do not.
* Added conditional active class style to navigation links and account dropdown.
* Commented out assets.version from assets initializers for ensuring assets loaded.
* Forem.layout set in forem.rb initializer to load forums with correct layout.
* Routes thoroughly revised which includes fix for user attribute updates w/out pass.
* User attributes alteration: aname changed to username.
* #= require jquery removed from forem js asset as it is already included.
* @import 'forem-bootstrap' included in forem css asset.