Update docs for v0.3.0

[KaradzaJuraj]

Changes

• DOCS:
  • bump version on the Install page
  • Demo
    • New Module → update template reference and errors; 2 images need updating
    • The Module Screen → 3 images need updating
    • Edit Module → 2 images need updating
    • Logs → remove
    • Feedback → fix the 2 weird links in the middle of the page
  • Writing Templates → rename into Templates
    • Overview → remove info, add a reference to our templates repo
    • Add page → “Add templates”
    • Validation → update Strings (pattern ✅) and Numeric (exclusiveMinimum & exclusiveMaximum ✅) & remove info
    • Helm Chart Dependencies → remove top info, in “Demo Time,” rewrite the template connecting, 3 images need updating
  • bonus
    • Usage metrics → in “Other,” fix email not to be code formatted
• REPO
  • README
    • update install command
    • update logo? (simplistic cyclops)
    • update image?
    • Add a reference to the templates repo
    • Future Work
      • Is the cluster nodes overview finished?
      • add "private repo support”
  • CONTRIBUTING
    • UI → it's not npm anymore, update commands to yarn