Add undefined to all bookmarklets for firefox compatibility.

On Firefox, clicking a bookmarklet will cause the page to display
the last return value of the bookmarklet, deleting the rest of the
page contents. The solution is to add undefined; at the end.

Javascript/loopplayall.js

@@ -1,3 +1,3 @@
 javascript:
-
 Array.from(document.getElementsByTagName("Video")).forEach(function(e){e.loop=true;e.play()})
+undefined;

Javascript/opendir_image.js

@@ -871,4 +871,5 @@ function main()
     fill_workspace(divs);
 }
 
-main();
+main();
+undefined;

Javascript/playalbum.js

@@ -1,5 +1,4 @@
 javascript:
-
 function give_event(player, index)
 {
     /*
@@ -18,3 +17,4 @@ for (var index = 0; index < players.length - 1; index += 1)
     give_event(players[index], index);
 }
 players[0].play();
+undefined;

Javascript/tab_renamer.js

@@ -8,4 +8,5 @@ function rename()
     }
 }
 
-rename();
+rename();
+undefined;

Javascript/unrowspan.js

@@ -1,5 +1,4 @@
 javascript:
-
 function unrowspan(tbody)
 {
     var rows = tbody.children;
@@ -24,3 +23,4 @@ function unrowspan(tbody)
 
 var tbodies = Array.from(document.getElementsByTagName("tbody"));
 tbodies.forEach(unrowspan);
+undefined;

Javascript/videotiles.js

@@ -1,5 +1,4 @@
 javascript:
-
 CSS = ""
 + "* {margin: 0; padding: 0}"
 + "html {height: 95%}"
@@ -111,4 +110,5 @@ function main()
     }
 }
 
-main();
+main();
+undefined;