Remove flagr_views and add to gitignore; Login and alerts updated

*login form will highlight fiels based off errors
*three new exception classes for logging in
*working alerts and some updated clearing for them, should work
*got tired of commiting minor changes in timestamps on compiled
templates so removed views/ and added it to .gitignore
fear not however, just run `make templates` like always to
generate views/ and the needed files.