Merge branch 'feature/firebase-token' into 'development'

Add field for firebase-token to session table

See merge request !5

akamuschema.sql

@@ -796,6 +796,7 @@ CREATE TABLE IF NOT EXISTS `trainingsubscription` (
     `idsession` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
     `user` INT UNSIGNED NOT NULL,
     `version` INT UNSIGNED NOT NULL DEFAULT 1,
+    `token` TINYTEXT NOT NULL,
     CONSTRAINT `fk_session_user` FOREIGN KEY
       (`user`)
     REFERENCES `user` (`iduser`)