Update trac-plugins-AccountManager to 0.4.4.

acct_mgr-0.4.4 (03-Apr-2014) - branch 0.11
 resolved issues
 * escape email for notification message against reported xss vulnerability


acct_mgr-0.4.3 (13-Feb-2013) - branch 0.11
 resolved issues
 * #8927: LoginModule with .htpasswd & passwd reset => not working
 * #10681: User with empty password can't reset their password
 * #10765: AttributeError: 'NoneType' object has no attribute 'strip'
 * #10871: AccountGuard destroys trac.ini
 * prevent two ways for a user to bypass a forced password change
 * skip BotTrapCheck on admin user requests, i.e. from inside user admin panel
 * keep trac.auth.LoginModule options defined after disabling that component
   by defining all options in acct_mgr.web_ui.LoginModule as well

 new features
 * allow logging-in into password-less accounts via acct_mgr.LoginModule