Improved error messagees, implemented delete ciphers, attachments and account, implemented two factor recovery.

Known missing:
 - import ciphers, create ciphers types other than login and card, update ciphers
 - clear and put device_tokens
 - Equivalent domains
 - Organizations

src/api/icons.rs

@@ -71,7 +71,7 @@ fn get_icon_cached(key: &str, url: &str) -> io::Result<Vec<u8>> {
 
     // Save the currently downloaded icon
     match File::create(path) {
-        Ok(mut f) => { f.write_all(&icon); }
+        Ok(mut f) => { f.write_all(&icon).expect("Error writing icon file"); }
         Err(_) => { /* Continue */ }
     };