Variables for unimplemented dim at night feature causing settings problems.

[ruthsarian]

For the V2 code, "NGHT DIM" needs to be removed from settingsStrings[] until that feature, and it's equivalent value in the enum for settings, exists. Without the enum, when scrolling through settings, everything after SET_BRIGHT displays the wrong string on the display.

[ruthsarian]

created a pull request to fix this and one other issue.