modeled LDAP config page, basic nondestructive unittest
expanded handling of possible form completion values: supports if already configured for mode, also database mode improved
add a wait... due to hidden field not being consistently available
changed wait_for_refresh to wait_for_visible_element
fixed typo in user_type default value, also mosed wait_for_visible_element to fill_field method
Merge pull request #97 from aweiteka/ldap_config

modeled LDAP config page, basic nondestructive unittest