minor layout improvements

[rsoika]

This is a minor layout improvement. I only added some CSS definitions and a smaller fix in the script to display the chat buttons:

Before:

After:

[phymbert]

Hi, thanks, you need to run the deps.sh

[phymbert]

@rsoika maybe it was not clear: static assets are converted to *.cpp generated sources and embedded in the server binary.

See the CI server workflow:
Run locally deps.sh and commit the generated changes.

• server: support reverse proxy setup with custom route #6325

[ggerganov]

I'm not very happy with this change. Here is what is looks in my setup (left is new, right is old):

Here are some recommendations:

• The active text in the textboxes should remain with high contrast as before
• The color of the buttons should match the color of the sliders (in my case green)
• No need to increase the font-size in the inputs (or at least not so prominently)

[rsoika]

If you do not like it you can roll it back.
Or we remove

color: #666;
font-size: 1.1rem;

and add the slider color
input[type='range']{ accent-color: #3584e4; }

[phymbert]

@rsoika Sorry I do not use the server web ui myself, I was wrongly thinking the proposed changes were OK for everyone.

Feel free to reopen a PR with recommandations provided by @ggerganov.