feat: Add NPV comparison and distribution charts to reporting

- Implemented NPV comparison chart generation using Plotly in ReportingService.
- Added distribution histogram for Monte Carlo results.
- Updated reporting templates to include new charts and improved layout.
- Created new settings and currencies management pages.
- Enhanced sidebar navigation with dynamic URL handling.
- Improved CSS styles for chart containers and overall layout.
- Added new simulation and theme settings pages with placeholders for future features.

static/css/main.css

@@ -117,6 +117,16 @@ a {
   margin-top: 3rem;
 }
 
+.chart-container {
+  width: 100%;
+  height: 400px;
+  background: rgba(15, 20, 27, 0.8);
+  border-radius: var(--radius-sm);
+  border: 1px solid rgba(255, 255, 255, 0.05);
+  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
+  margin-bottom: 1rem;
+}
+
 .section-header {
   margin-bottom: 1.25rem;
 }