added login / signup ui
WIP of sign up http request
fix create user
commit
TAAT
zz
Merge branch 'master' of bitbucket.org:xiamx/comp307
boilerplate for accoutn page
change loz of things
merge?

Merge branch 'master' of bitbucket.org:xiamx/comp307
added account, value description and so on
Merge branch 'master' of bitbucket.org:xiamx/comp307

Conflicts:
	application/views/common/nav.php
final commit for the night!
add logout and other things
added form control so dont send out request when invalid inputs(empty fields, second pass dont match first and with html5 form checking as well)
handled password not matching form validity
minor logic adjust for validation