CHANGE-18 New Installer - bug fixes and updates

    remove includes/localConfig.php shouldn't have been committed
    fix tab order for forms and some html validation errors
    some error checking logic around json progress logging
    add some debugging stuff
    add language selector to initial page
    need to rejig the test framework for the new installer
    add database connection test and language support
    fix latin1 file loading, update admin setup template to make warnings more relevant. update completion to make warnings more relevant
    update help text
    updating code for multiple admin selection