Overhaul dashboard3

[exurd]

1. Upgraded to Bootstrap 5.3.8 (with integrity checks)
2. Dark and Light mode (including a button to switch between them)
3. Upgraded to the last version of AngularJS (1.8.2)
4. Better text font (monospace) and coloring
5. Sticky header (searching for a new job is 10x easier)
6. Compiled Haxe Javascript code as ES6 with optimise flags enabled
7. Tackled some lag when using the dashboard (50 scrollback when every job is displayed; up to 500 when searching/filtering)
8. Used the Clusterize.js library on the logs. This prevents mouse lag when new lines are added
9. Pagination to avoid super lag on certain machines
10. Added minify commands into Makefile (smaller network footprint)

These changes can be seen here (warning, mixed content; enable "Insecure content" for it to work): https://exurd.github.io/ab_dashboard3_overhaul/

Screenshots: