[#2027] Fix date range bug

frontend/src/components/c-summary-charts.vue

@@ -535,7 +535,9 @@
 
  // skip if accidentally clicked on ramp chart
  if (this.drags.length === 2 && this.drags[1] - this.drags[0]) {
- const tdiff = (new Date(this.filterUntilDate)).valueOf() - (new Date(this.filterSinceDate)).valueOf();
+ // additional day was added to include the date represented by filterUntilDate
+ const tdiff = (new Date(this.filterUntilDate)).valueOf() - (new Date(this.filterSinceDate)).valueOf()
+ + window.DAY_IN_MS;
  const idxs = this.drags.map((x) => (x * tdiff) / 100);
  const tsince = window.getDateStr(new Date(this.filterSinceDate).getTime() + idxs[0]);
  const tuntil = window.getDateStr(new Date(this.filterSinceDate).getTime() + idxs[1]);
@@ -633,7 +635,7 @@
  getBaseTarget(target: HTMLElement | null): HTMLElement | null {
  if (!target) {
  // Should never reach here - function assumes that target is a child of the div with class 'summary-chart__ramp'
  console.error('Error: The getBaseTarget function in c-summary-charts.vue has been called on an element that is '
  + 'not a child of the div with class summary-chart__ramp. This might affect the drag view functionality.');
  return null;
  }