Merge pull request #3 from sweetlilmre/master

AD bugfix and addtional option
Fix typo
fix lgap_login_only -> ldap_allow_normal_login
Merge pull request #4 from sweetlilmre/master

Fixed logic to check for allowed normal logins
Housekeeping++

Improve behavior
 * After successfull login goes back to the page the user wanted
   to view
 * If the login fails it fall backs to the standard mechanism.
   Unless specified otherwise
 * No more missleading prints about wrong password when login
   fails

TODO: Need to add some prints when login fails using LDAP
Housekeeping continue
All config moved to admin page (no need for ldap-config.php) ldap-login-admin-form.php added
Bug in Generic LDAP fixed ($bind could be unset, so bind check moved into loop)
Braces layout changed from K&R and all tabs replaced with spaces
Merge remote-tracking branch 'upstream/master'

Conflicts:
	ActiveDirectoryLDAPServer.php
	GenericLDAPServer.php
	LDAPServer.php
	README.md
	ldap-config-example.php
	ldap-login-layer.php
	ldap-login-logout-page.php
	ldap-login.php
	qa-ldap-process.php