Redesigned UI Theme

[SurferSamuel]

Summary

Redesigned the UI theme across all pages.

Frontend Changes

• Added logo to sidebar
• Changed icons to their rounded versions on sidebar
• Changed font from Inter to Geist
• Changed background colours to a darker grey
• Changed button, switch, scrollbar and accordion themes
• Updated date picker component:
  • Removed time selector from popout
  • Added disableFuture option
  • "Add Trade" date picker can't select future dates

Backend Changes

• Removed unused palettes in theme.ts
• Clarified an error message for asxcodes already existing
• Fixed an issue causing logs to be created with incorrect dates
• Fixed .historical() unauthorized error by moving to .chart() instead
• Changed portfolio graph 1-year interval to use daily data instead of weekly

Documentation Changes

• Updated README.md
  • Fixed incorrect command for starting the application
  • Added example image of portfolio page

[Crosssteel]

Changes of the UI looks really good