gui: remove button setting

The setting should be a separetly application. And User should modify
it only from user sessions, bacause it's a security issue. As first
step of separation the gui and gui settings - remove button from client
window.

If need modify setting run:
HOME=/path/to/entrance/home/folder elementary_config
By default it's '/var/cache/entrance/client/'.

data/entrance.arch

@@ -1,7 +1,7 @@
 #%PAM-1.0
-auth        include     system-login
--auth       optional    pam_gnome_keyring.so
-account     include     system-login
-password    include     system-login
-session     include     system-login
--session    optional    pam_gnome_keyring.so auto_start
+
+auth       required     pam_securetty.so
+auth       requisite    pam_nologin.so
+auth       include      system-local-login
+account    include      system-local-login
+session    include      system-local-login

data/themes/default/default.edc

@@ -194,27 +194,7 @@ collections {
                visible: 1;
             }
          }
-         part { name: "entrance.conf";
-            type: EXTERNAL;
-            source: "elm/button";
-            description { state: "default" 0.0;
-               fixed: 1 1;
-               visible: 1;
-               max: 0 0;
-               align: 1.0 1.0;
-               rel2.to_x: "entrance.actions";
-               rel2.relative: 0.0 1.0;
-               params {
-                  string: "label" "Settings";
-               }
-            }
-            description { state: "enabled" 0.0;
-               inherit: "default" 0.0;
-               visible: 1;
-            }
-         }
-/*
-*/
+/* */
       }
       programs {
          program {
@@ -245,20 +225,6 @@ collections {
             action: STATE_SET "default" 0.0;
             target: "entrance.users";
          }
-         program {
-            name: "conf_enabled";
-            signal: "entrance,custom_conf,enabled";
-            source: "";
-            action: STATE_SET "enabled" 0.0;
-            target: "entrance.conf";
-         }
-         program {
-            name: "conf_disabled";
-            signal: "entrance,custom_conf,disabled";
-            source: "";
-            action: STATE_SET "default" 0.0;
-            target: "entrance.conf";
-         }
       }
    }
 

src/daemon/entrance.c

@@ -232,19 +232,6 @@ _entrance_main(const char *dname)
                        chown(ENTRANCE_CONFIG_HOME_PATH,
                              pwd->pw_uid, pwd->pw_gid);
                     }
-                  else
-                    {
-                       if (!ecore_file_is_dir(ENTRANCE_CONFIG_HOME_PATH))
-                         {
-                            PT("Hum a file already exists here "
-                               ENTRANCE_CONFIG_HOME_PATH" sorry but"
-                               "I remove it, I need it ^^");
-                            ecore_file_remove(ENTRANCE_CONFIG_HOME_PATH);
-                            ecore_file_mkdir(ENTRANCE_CONFIG_HOME_PATH);
-                            chown(ENTRANCE_CONFIG_HOME_PATH,
-                                  pwd->pw_uid, pwd->pw_gid);
-                         }
-                    }
                }
              else
                {