add apache shiro
remove apache shiro - plugin is broken for grails 2.4.3
add spring security dependency
spring security setup + secure a page
login link to g:link
login link back to <a>
logout - work in progress.
home page - link to g:link
home page link fixes
login
secure calculator page
hacks to determine https login problems
successful implement spring login over https
spring security - partial implement logout
sprint security - logout complete.
spring security - logged in user welcome
merge login-page into master.