Version 1.05

Vastly improved print progress:
- Made layer detection more rigid
- First layer height is automatically calculated
- Layer and filament estimation data is filled with averaged values on reconnect
- Implemented new estimation method based on fraction_printed property
- Progress bar reads fraction_read to indicate progress (if available)
- Removed redundant filament estimation variables
- Improved Print Status appearance in the JS code
Reconnects are now completely implemented
Head control buttons (except for heat) are disabled whenever a print is in progress
Some controls on the Control tab are now centered