remove the caching of text_svg

Since the longest part of the algorithm is saving and reloading the
data this speeds up the entire process. Next we can make sure every
slide's text gets made and added individually such that they can be
made one at a time and see the changes nearly instant

src/ui/text_svg.rs

@@ -339,15 +339,16 @@ impl TextSvg {
             Pixmap::new(size.width as u32, size.height as u32)
                 .expect("opops");
         resvg::render(&resvg_tree, transform, &mut pixmap.as_mut());
-        let _ = pixmap.save_png(&path);
-
         debug!("rendered");
-        let handle = Handle::from_path(path);
-        // let handle = Handle::from_rgba(
-        //     size.width as u32,
-        //     size.height as u32,
-        //     pixmap.take(),
-        // );
+        // let _ = pixmap.save_png(&path);
+
+        debug!("saved");
+        // let handle = Handle::from_path(path);
+        let handle = Handle::from_rgba(
+            size.width as u32,
+            size.height as u32,
+            pixmap.take(),
+        );
         self.handle = Some(handle);
         debug!("stored");
         self