fix user profile, now only visible to that user
User profile fix and general notes

- current_user helper has been added.
-
User profile fix and general notes

User Create/Profile Fix:
- current_user helper has been added.
- flash[:notice] visible after nav bar in views/layouts/application.html.erb under navbar
- fix in user controller/create method preventing logged in user from accessing other user's profile page via url tampering
- Unresolved issue in the controller/create method: showing flash[:notice] is not
rendering back to user.

General Notes:
- No error on sign up if short password (plus other notifications re email/password issues)
- No file uploader
- Sign up still visible at home page when logged in
- Cannot update email account info
Merge branch 'user_fixes' of https://github.com/msh345/light-it-up into msh345-user_fixes
verified pull request and deleted sessions_helper.rb
Merge pull request #35 from eigilsagafos/msh345-user_fixes

Msh345 user fixes