Add hostname to NixOS title and make dashboard title bold

- Change system panel title from 'NixOS:' to 'NixOS hostname:'
- Make main dashboard title 'cm-dashboard' bold in top bar
- Remove unused Typography::title() function to fix warnings
- Update SystemWidget::render_with_scroll to accept hostname parameter
- Update version to 0.1.41 in all Cargo.toml files and dashboard code

dashboard/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "cm-dashboard"
-version = "0.1.40"
+version = "0.1.41"
 edition = "2021"
 
 [dependencies]