[FEATURE] Settings page redesign

- Re-did the gear wheel dropdown
- Profile page new UI
- Security page new UI
- Advanced settings page new UI and edit functionality

RT-1989, RT-1594, RT-1983, RT-1980
[FIX] Fixed img tags in Jade
[FIX] img tags
Merge pull request #1398 from mrajvanshy/Settings

[FEATURE] Settings page redesign