fix: EPINIO-605-608

[johnlcos]

PR Checklist

• Linting Test is passing
• Code is well documented
• If applicable, a PR in the epinio/docs repository has been opened

Summary

Fixes #

• Replace export app modal with a new modal using trailhand
• Update login modal in extension mode to use trailhand components
• Improve loading behavior on applications page
• Add Install Epinio back to table in extension mode
• Replace delete app modal with a new modal using trailhand

Occurred changes and/or fixed issues

Technical notes summary

Areas or cases that should be tested

Areas which could experience regressions

Screenshot/Video

[dcharles525]

LGTM