Merge remote-tracking branch 'origin/protein_line' into bolus_line

LoopFollow/Controllers/Graphs.swift

@@ -380,6 +380,13 @@ extension MainViewController {
                 BGChart.xAxis.addLimitLine(ul)
             }
         }
+
+        //Protein line
+        let ul3 = ChartLimitLine()
+        ul3.limit = Double(dateTimeUtils.getNowTimeIntervalUTC().advanced(by: -90 * 60))
+        ul3.lineColor = NSUIColor.systemOrange.withAlphaComponent(0.5)
+        ul3.lineWidth = 1
+        BGChart.xAxis.addLimitLine(ul3)
     }
     
     func createMidnightLines() {