removed email routes, took our sessions, created route and view for dahsboard.
Added flash messages to category and user models
added style for errors, set up error messages for create users and create task.
Flash messages
thursday am work
Merge branch 'master' into Jen

Conflicts:
	app/controllers/categories_controller.rb
	app/controllers/users_controller.rb
Merge branch 'master' into paul
resolved merge conflicts.
css edits