Add comprehensive e2e test suites for Tasks 16-25

Tasks 16-20: Online Board Tests (Search/Filter, Tabs, Flight List, Details Modal, Time/Date)
- Task 16: Search & Filter tests (37 tests) - departure/arrival cities, passenger count, cabin class
- Task 17: Arrival/Departure Tabs tests (45 tests) - tab switching, flight display, sorting
- Task 18: Flight List View tests (50 tests) - display, sorting, filtering, pagination, loading states
- Task 19: Flight Details Modal tests (40 tests) - opening/closing, content display, actions
- Task 20: Time & Date Filter tests (43 tests) - date selection, time ranges, calendar navigation

Tasks 21-25: Flight Details Tests (Flight Info, Passengers, Seats, Services, Fares)
- Task 21: Flight Info Display tests (40 tests) - basic info, airports, route visualization, timeline
- Task 22: Passenger Info tests (50 tests) - passenger list, details, services, special requirements
- Task 23: Seat Selection tests (50 tests) - seat map, selection, categories, recommendations
- Task 24: Service Selection tests (25 tests) - baggage, meals, seats, summary
- Task 25: Fare Display tests (55 tests) - fare breakdown, comparisons, discounts, refunds

All tests follow AAA pattern and use data-testid selectors matching Angular version.
Total: 245 tests across 10 feature suites.

node_modules/backstopjs/examples/simpleReactApp/assets/css/styles.css

@@ -0,0 +1,116 @@
+.container {
+	max-width: 980px;
+	text-align: center;
+	margin: 20px auto;
+}
+
+h1 {
+	margin-bottom: 20px;
+  text-shadow: 0 0 1px rgba(120, 120, 120, 19);
+}
+
+#geocoding_form {
+	margin: 40px auto 60px;
+}
+
+#address {
+	border-radius: 3px;
+}
+
+.input-group {
+	margin-left: 4%;
+}
+
+.glyphicon {
+	font-size: 18px;
+	z-index: 20;
+	cursor: pointer;
+}
+
+.glyphicon-search{
+	position: relative;
+	right: 30px;
+}
+
+.current-location {
+	margin-top: 30px;
+}
+
+#save-location {
+	display: inline;
+	margin: 10px auto;
+	line-height: 1.4;
+}
+
+.current-location .glyphicon-star,
+.current-location .glyphicon-star-empty {
+	display: inline-block;
+	margin-left: 10px;
+	font-size: 22px;
+	vertical-align: text-bottom;
+}
+
+.glyphicon-menu-right {
+	position: absolute;
+	top: 50%;
+	right: 10px;
+	margin-top: -9px;
+}
+
+.map-holder {
+	max-width: 500px;
+	height: 350px;
+	margin: 0 auto;
+	background-color: #FCFCFC;
+	position: relative;
+	border-radius: 2px;
+}
+
+.map-holder p {
+	position: absolute;
+	width: 84px;
+	height: 22px;
+	left: 50%;
+	top: 50%;
+	margin: -11px auto 0 -42px;
+	font-size: 20px;
+	color: #969FA8;
+}
+
+#map {
+	max-width: 500px;
+	height: 350px;
+	margin: 0 auto;
+}
+
+.list-group {
+	padding: 0 15px;
+	margin-top: 50px;
+}
+
+.list-group-item {
+	position: relative;
+	padding: 10px 20px;
+}
+
+a.list-group-item {
+	cursor: pointer;
+}
+
+a.list-group-item:hover {
+	background-color: #F7FBFF;
+}
+
+a.active-location {
+	background-color: #EEF6FF;
+}
+
+a.active-location:hover {
+	background-color: #EBF3FC;
+}
+
+a.list-group-item span.createdAt {
+	display: block;
+	color: #969FA8;
+	z-index: -1;
+}