Added new config setting: auto uppercase blacklist that is configurable
in the advanced option of the serial tab, with M117 included in the
default settings of the blacklist. Changed the sendCommand method in the
TerminalViewModel to auto uppercase the entire gcode command except when
gcode is in the blacklist. Updated documentation to include the default
auto uppercase blacklist command M117.
Resolves: #1026
(cherry picked from commit dbf7af1)