move repeated PSTR string to const to save space
removed extraneous newline in printJsonTemperatures
Merge branch 'feature/dynaconfig' of https://github.com/BrewPi/brewpi-avr into feature/dynaconfig
Merge branch 'feature/dynaconfig' of https://github.com/BrewPi/brewpi-avr into feature/dynaconfig

Conflicts:
	brewpi_avr/Debug.cpp
optimization, saves 30 bytes
inlined all log functions, removed conditionals for inlining.