Hydralit

- Added new component, progress_bar
- Added new component, info_card
- Added new component, option_bar
- Finally added proper doc strings to all the components, as there are a huge number of configuration options for each component to make it look exactly how you wish by overriding any part of the theme options.

- More visual appearence improvements for the Navbar, including a much nicer non-animated mode.
- Removed the background effect on all loaders (as everyone hated it).
- Can completely customise the Home and Logout entries on the Navbar as well as the other entires.
- Full support for Font Awesome and BootStrap icons offline for Navbar entries, as well as all emojis.
- Full support for all versions of Streamlit up to current (1.4.0).