Related to:

• Coder OSS on an iPhone looks sad and not responsive #2674
• Interface on iPad (Safari) is zoomed #3012

Tasks:

• Add mobile navbar
• Make /workspaces responsive
• Make /workspaces/:id responsive
• Make /templates responsive
• Make /templates/:id responsive
• Make /settings responsive
• Make /users responsive
• Make /workspaces/:id/builds/:id responsive
• Make /login responsive
• Adjust viewport metatag for responsiveness