ui: make pixel sizes correct, use more of the figma

I noticed the pixel sizes were off which made it harder to match the
pixel dimensions of rob's figma designs. This restores the pixel size
and adjust the font sizes so that things look somewhat ok with the
default pixel settings.

Signed-off-by: William Casarin <jb55@jb55.com>

src/app.rs

@@ -481,7 +481,7 @@ impl Damus {
             timelines.push(Timeline::new(filter));
         };
 
-        let imgcache_dir = data_path.as_ref().join("cache/img");
+        let imgcache_dir = data_path.as_ref().join(ImageCache::rel_datadir());
         let _ = std::fs::create_dir_all(imgcache_dir.clone());
 
         let mut config = Config::new();