added code to prevent panic if /login is reached but no settings exist

minor styling. added success and fail message to top of /signup screen
modified open_registration to boolean value in database

pkg/database/schema/sample.sql

@@ -49,7 +49,7 @@ insert into builds values (9, 3, 'node_0.80', 'Success', '2013-09-16 00:00:00','
 
 -- insert default, dummy settings
 
-insert into settings values (1,'','','','','','','','','','localhost:8080','http');
+insert into settings values (1,'','','','','','','','','','localhost:8080','http', 0);
 
 -- add public & private keys to all repositories
 

pkg/database/schema/schema.go

@@ -127,7 +127,7 @@ CREATE TABLE settings (
   ,smtp_password    VARCHAR(1024)
   ,hostname         VARCHAR(1024)
   ,scheme           VARCHAR(5)
-  ,open_invitations INTEGER
+  ,open_invitations BOOLEAN
 );
 `
 
@@ -195,5 +195,9 @@ func Load(db *sql.DB) error {
 	db.Exec(buildCommitIndex)
 	db.Exec(buildSlugIndex)
 
+	// migrations for backward compatibility
+	db.Exec("ALTER TABLE settings ADD COLUMN open_invitations BOOLEAN")
+	db.Exec("UPDATE settings SET open_invitations=0 WHERE open_invitations IS NULL")
+
 	return nil
 }

pkg/database/schema/schema.sql

@@ -112,7 +112,7 @@ CREATE TABLE settings (
     ,smtp_password    VARCHAR(1024)
     ,hostname         VARCHAR(1024)
     ,scheme           VARCHAR(5)
-    ,open_invitations INTEGER
+    ,open_invitations BOOLEAN
 );
 
 CREATE UNIQUE INDEX member_uix       ON members  (team_id, user_id);