Proper author info for all remaining modules

lib/ansible/modules/database/mysql/mysql_db.py

@@ -89,7 +89,7 @@ notes:
      the credentials from C(~/.my.cnf), and finally fall back to using the MySQL
      default login of C(root) with no password.
 requirements: [ ConfigParser ]
-author: Mark Theunissen
+author: "Mark Theunissen (@marktheunissen)"
 '''
 
 EXAMPLES = '''

lib/ansible/modules/database/mysql/mysql_user.py

@@ -121,7 +121,7 @@ notes:
      the file."
 
 requirements: [ "MySQLdb" ]
-author: Mark Theunissen
+author: "Mark Theunissen (@marktheunissen)"
 '''
 
 EXAMPLES = """

lib/ansible/modules/database/mysql/mysql_variables.py

@@ -30,6 +30,7 @@ short_description: Manage MySQL global variables
 description:
     - Query / Set MySQL variables
 version_added: 1.3
+author: "Balazs Pocze (@banyek)"
 options:
     variable:
         description: