escape apostrophes in prefix/suffix on move existing which fixes BUG-116

BUGs

@@ -1,4 +1,4 @@
-### Next: 116
+### Next: 117
 BUG-100: I managed to get 2 photos matching mich in the NOT_WORKING photo (probably dif refimgs but same p.tag?)
     = /photos/2012/20120414-damien/IMG_8467.JPG
 BUG-106: cant add trudy /pat? as refimgs via FaceDBox
@@ -6,4 +6,3 @@ BUG-106: cant add trudy /pat? as refimgs via FaceDBox
       (it came from a face bbox, BUT, I have grown the face seln by 10%?)
 BUG-109: add mich force override, removed it, then re-added it, then rebuild DB form scratch and metadata has a duplicate
     - redo disco metadata with md5 not UUID of face dataS
-BUG-116: apostrophes in existing paths crashs

internal/js/files_support.js

@@ -60,7 +60,10 @@ function GetExistingDirsAsDiv( dt, divname, ptype )
                 else
                     vis = ''
                 s+= '<button class="btn btn-outline-primary move_'+item.ptype+ ' ' + vis + '" '
-                s+= 'onClick="$(\'#prefix\').val(\''+item.prefix+'\'); $(\'#suffix\').val(\''+item.suffix+'\');return false;">'+item.prefix+item.suffix+'</button>'
+                    s+= 'onClick="$(\'#prefix\').val(\''+item.prefix.replace("\'","\\\'")+'\'); '
+                        s+='$(\'#suffix\').val(\''+item.suffix.replace("\'","\\\'")+'\');return false;">'
+                    s+=item.prefix+item.suffix
+                    s+='</button>'
             } )
             if( s == '' )
                 $('#existing').html('')