Added "use strict"; to dd_lightbar_menu.js and some Digital Distortion mods& made some fixes

Added "use strict"; to dd_lightbar_menu.js and some Digital Distortion mods & made some JS fixes. Also, SlyEdit: Fixed the upper-left single corner character for boxes & updated bottom border text for cross-posting for the sub-board list. Updated code that had some hard-coded high-ASCII characters. SlyVote: Made an update to properly show vote stats again. Updated code that had hard-coded high-ASCII characters. Fixed some other small issues.