UI always starts in Imperial mode

[haiqu]

Suggested change to UserInterface.cpp follows:

#if defined(LEADSCREW_HMM)
this->metric = true; // start out with metric
#else
this->metric = false; // start out with imperial
#endif

[haiqu]

Oops, looks like this is an exact duplicate of #103

[andrea271068]

Hi, what about 79 that says:

this-> metric = false; // start out with imperial.

My question is: I would like to start with metric and not imperial, what I should do? I don't know anything about coding.
Please can you drive me to make the change, thanks