UI/UX changes: PicoCSS -> mirageCSS, rice-box.go removed and placed on .gitignore (since it is generated anyway), update templates. Signed-off-by: Aoi K <koizumi.aoi@kyoko-project.wer.ee> Co-authored-by: Aoi K <koizumi.aoi@kyoko-project.wer.ee> Reviewed-on: https://git.mills.io/prologic/spyda/pulls/1 Co-authored-by: Aoi Koizumi (古泉 あおい) <novaburst@noreply@mills.io> Co-committed-by: Aoi Koizumi (古泉 あおい) <novaburst@noreply@mills.io>