Merge pull request 'merger :-)' (#304) from remove-merged-staging-diff into staging

Reviewed-on: Ruderverein-Donau-Linz/rowt#304

staging-diff.sql

@@ -1,9 +0,0 @@
-CREATE TABLE IF NOT EXISTS "notification" (
-	"id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
-	"user_id" INTEGER NOT NULL REFERENCES user(id),
-	"message" TEXT NOT NULL,
-	"read_at" DATETIME,
-	"created_at" DATETIME DEFAULT CURRENT_TIMESTAMP NOT NULL,
-	"category" TEXT NOT NULL,
-	"link" TEXT
-);