UI Design — Fixes to UX and Layout

[Ben8t]

List of frontend design improvements to fit with Figma designs:

• https://github.com/kestra-io/kestra-ee/issues/2758
• Standardized all empty pages template with new visuals and background #6930
• Remove the bottom spacing on the EE empty page #7110
• Review button secondary #5540
• Layer change dashboard: change hover color #7119
• Vertically center all elements in the row. #7018
• [Bug] Namespace files has a 404 icon instead of the right namespace files icon #7116
• Adjust the color on the filter bar #7114
• Add a shadow to all charts #7113
• Adjust the video ratio in the documentation on the right #7111
• Review the colors used in the pagination. #6987
• Improve the pie chart to make it responsive and add more legends #6293

[MilosPaunovic]

Closing this one as only one task is remaining to be done, and we're tracking it in it's own issue.