added option to remove the auto back link on wide theme
apply settigns title on session layout header
added upgrade generator and options for install generator
update bundled gems
added more generators and initial setup for site specific users
apply site specific ability for site users
added super user form
refactor error handling

there have been some missing class definitions in the
other PR. Now fixed.
Merge remote-tracking branch 'upstream/master'
updated .gitignore
updated .gitignore
Merge pull request #27 from sumcumo/refactor_error_class

Refactor error class
merged pull request
Merge branch 'sumcumo-update_gitignore'
added settings menu site header
added default role generator on site create
Merge remote-tracking branch 'upstream/master'
rename test/helper to test/test_helper
change the whole testing environment
remove unused test