Use bool values in database

dist/sql/pvv_mysql.sql

@@ -12,7 +12,7 @@ CREATE TABLE projects (
   `id` INTEGER PRIMARY KEY AUTO_INCREMENT,
   `name` TEXT,
   `description` TEXT,
-  `active` BOOLEAN
+  `active` BOOLEAN DEFAULT TRUE
 );
 
 CREATE TABLE projectmembers (
@@ -21,8 +21,8 @@ CREATE TABLE projectmembers (
   `uname` TEXT,
   `mail` TEXT,
   `role` TEXT,
-  `lead` BOOLEAN DEFAULT 0,
-  `owner` BOOLEAN DEFAULT 0
+  `lead` BOOLEAN DEFAULT FALSE,
+  `owner` BOOLEAN DEFAULT FALSE
 );
 
 CREATE TABLE users (`uname` TEXT, `groups` INT DEFAULT 0);