matrix: add log for matrix crypto store init

deleting the crypto DB resulted in InitMatrixCrypto taking ages, added a
Initing/Inited log pair around the function so it's obvious this is the
culprit if any one else faces the same thing.

matrix.go

@@ -101,7 +101,7 @@ func newMatrixDaemon(app *appContext) (d *MatrixDaemon, err error) {
 			d.languages[id.RoomID(user.RoomID)] = user.Lang
 		}
 	}
-	err = InitMatrixCrypto(d)
+	err = InitMatrixCrypto(d, app.info)
 	return
 }