add a big scary warning to the settings page about software e-stops
add a little note to the settings page about it waiting 3 seconds before reconnecting
adds the option to disconnect / reconnect after sending M112. May help break out of blocking commands by resetting some control boards
Update icon to new FA icon to be compatible with octoprint 1.3.5's move to an update font awesome Add a setting to allow changing of the command in situations where the user may wish to issue some other command other than M112
