Revamp overall report UI and improve report navigation (#1102)

This PR overhauls the overall report UI (layout and template/sample
pages) and adds a few improvements including:

- A dark mode theme for all three pages
- Navigation breadcrumbs
- Toggle-able table of content for the index page (located top right of
the screen)
- Dedicated header showing aggregated results for the index and
benchmark pages
- A function to create a unified JSON file out of experimental results
that preserves the hierarchical relationships between projects,
benchmarks, and samples

Author: myanvoos

report/common.py

@@ -485,14 +485,29 @@ def get_macro_insights(self,
                          benchmarks: list[Benchmark]) -> AccumulatedResult:
     """Returns macro insights from the aggregated benchmark results."""
     accumulated_results = AccumulatedResult()
-    for benchmark in benchmarks:
-      accumulated_results.compiles += int(
-          benchmark.result.build_success_rate > 0.0)
-      accumulated_results.crashes += int(benchmark.result.found_bug > 0)
-      accumulated_results.total_coverage += benchmark.result.max_coverage
-      accumulated_results.total_runs += 1
-      accumulated_results.total_line_coverage_diff += (
-          benchmark.result.max_line_coverage_diff)
+    if len(benchmarks) == 1:
+      benchmark = benchmarks[0]
+      results, targets = self.get_results(benchmark.id)
+      samples = self.get_samples(results, targets)
+
+      for sample in samples:
+        if sample.result and sample.result.finished:
+          accumulated_results.compiles += int(sample.result.compiles)
+          accumulated_results.crashes += int(sample.result.crashes)
+          accumulated_results.crash_cases += int(sample.result.crashes)
+          accumulated_results.total_coverage += sample.result.coverage
+          accumulated_results.total_runs += 1
+          accumulated_results.total_line_coverage_diff += (
+              sample.result.line_coverage_diff)
+    else:
+      for benchmark in benchmarks:
+        accumulated_results.compiles += int(
+            benchmark.result.build_success_rate > 0.0)
+        accumulated_results.crashes += int(benchmark.result.found_bug > 0)
+        accumulated_results.total_coverage += benchmark.result.max_coverage
+        accumulated_results.total_runs += 1
+        accumulated_results.total_line_coverage_diff += (
+            benchmark.result.max_line_coverage_diff)
     return accumulated_results
 
   def get_coverage_language_gains(self):