Beta 2

• added the ability to adjust temperature for (un)loading filament

• readded the ability to leave print menu while printing

• removed bed auto pid tuning (unnessecary and causing problems)

• fixed default x,y,z-steps to give more acurate printing results

• fixed a bug in the move menu

• fixed an issue with the auto pid tuning (now does 8 cycles for more accurate results)

• fixed fan not being on while doing pid tuning

• fixed print settings being invisible

• fixed some navigation issues