Various minor fixes and improvements

- Visiting chef screen now shows "No visiting chefs today" instead of nothing when there are, get this, no visiting chefs today
- 24-hour locations (Bytes) will no longer show as "Closing Soon" for the last 30 minutes of the day only to reset back to "Open" at midnight
- The app will now display a network error instead of loading indefinitely if an error occurs while fetching dining data
- Other minor spacing and layout changes

RIT Dining/Assets.xcassets/Icon.imageset/Contents.json

@@ -0,0 +1,12 @@
+{
+  "images" : [
+    {
+      "filename" : "RIT Dining Temp Logo.png",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}