Editor Update v1

[dons20]

This issue will track the main features being planned for the update. This list is by no means exhaustive, but should cover the main features/bugs to be resolved before release, including #2.

The existing site is outdated and being redone in React. The editor tool is also being changed due to difficulties in implementing certain community-desired features, namely tables.

• [x] Website design redone
• [x] Updated existing dependencies
• [ ] Implemented toolbar with all official text formatting options
  • [x] Enabled table functionality
  • [x] Implemented [img] tags
  • [ ] Added new widgets (preview only since they're just links)
    • [ ] YouTube
    • [ ] Steam Store
    • [ ] Steam Community
• [x] Sync toolbar options with editor behaviour
• [x] Added Review preview
• [x] Added Raw markup preview
• [ ] Enabled markup paste support
• [x] Responsive editor refactoring

~~Editor Optimization~~ - Removing this as a goal for v1.

Minimum target will be under 5s load time on average device.