Firmware v0.3.0

Build firmware v0.3.0. Main updates are updating to powertools ec-v3.1.1 and reporting/powergui ec-v2.1.0.

The main changes are:

• PB_NOISE test !177: update NTESTS property to match database field.
• PB_NOISE test !177: sample 100, not 1000 times (gives sufficient stats)
• OFIn test: check upper limit on lin-pol output voltage (linPol1V4), which is 1.6 V (see !179)
• Update labremote to latest official main
• Convenience changes:
  • show in GUI if a powerboard can be used to build a module (see screenshot; see !178). NB: The PB_NOISE test is skipped for this atm, as it is still in a development stage.
  • for each test, show what the expected ranges of a failing value are; print this to cout, but also write this into the test comments (see second screenshot; see !180). ⚠ WARNING! ⚠ There may be some bugs, as this required many small changes, where one can easily get confused. I double checked everything, but there is no guarantee, yet.