Sync fixes

• Fixes sync not working for edits to drawings. Previously, drawings' updated timestamps were not updated on save. This broke sync.
  • Be very careful here! Consider creating a JEX export before editing outdated copies of existing drawings.
  • The next time a resource is edited, its timestamp will be newer than all other versions of that drawing. All other versions of that drawing have the same last modified timestamp as the first version of the drawing. These older versions will likely be overwritten.
  • This issue should only apply if you were using the previous pre-release (tagged prerelease-1).

Other changes

• Updates js-draw to v1.9.1
  • Fixes slight blurriness on high-resolution displays
  • Performance improvements
• Merges upstream changes