notify that tables already exist
Extract Install/index view/action
refactor configureDbAction
by default do indexAction
fix: typo
refactor db config submit action
Remove ACTION_SUBMIT_DB_CONFIG constant

and discriminate based on request method
refactor createTablesAction
fix: removed unneeded view setting
refactor school configuration
add some missing style
display real path when reporting write error
removed uneeded code
merge school config actions
removed unused constants
moved the display of existing tables in the create_tables page
redirect after post to create tables
use flash bag to display post results
Merge branch '40_refactor_install' fix #40