reset seconds to subtract appropriately

src/components/timer.vue

@@ -68,6 +68,7 @@
 					this.totalSeconds = 0;
 					this.savedPreviousSeconds = 0;
 					this.comments = null;
+					this.secondsToSubtract = 0;
 				});
 
 			},
@@ -109,6 +110,7 @@
 			setSecondsManually(){
 				this.totalSeconds = this.manualHours*60*60 + this.manualMinutes*60 + this.manualSeconds;
 				this.savedPreviousSeconds = this.totalSeconds;
+				this.secondsToSubtract = 0;
 				window.localStorage.setItem('lastTotalSeconds', this.totalSeconds);
 			}
 		},