In the javascript editor, '$' characters were getting stomped on when

trying to remove backreferences after doing transformations on text
(Bolding, Italicizing, etc.).  This can be fixed by first escaping the
string to be transformed and then unescaping it afterwards.

lib/gollum/public/gollum/javascript/editor/gollum.editor.js

@@ -546,9 +546,12 @@
              typeof definitionObject.replace == 'string' ) {
           debug('Running replacement - using ' + definitionObject.replace);
           var rt = definitionObject.replace;
+
+          repText = escape( repText );
           repText = repText.replace( searchExp, rt );
           // remove backreferences
           repText = repText.replace( /\$[\d]/g, '' );
+          repText = unescape( repText );
 
           if ( repText === '' ) {
             debug('Search string is empty');