UniStore v2! (#36)

* Do not build here.

* WIP: UniStoreV2!

This implementation is ugly and a big cleanup is needed.

* [UniStoreV2]: Add `Lang::get(...)`.

* Add back UniStore autobooting.

* UniStoreV2: Add List Layout.

* Some more UniStore work.

Also constify vector's.

* Some more spritesheet checks.

* oops.. forgot to do `Config::fading`.

* Display UniStore version on the Store list bar.

* version now needs to be `0` or `1` or not included.

versions with 2, 3, 4 and up shows an error now.

* You can now also scroll to the next page with D-Pad Left/D-Pad Right!

* Last fix before merge?

source/download/download.cpp

@@ -861,7 +861,7 @@ void displayProgressBar() {
 					formatBytes(downloadNow).c_str(),
 					formatBytes(downloadTotal).c_str(),
 					((float)downloadNow/(float)downloadTotal) * 100.0f, 
-					Lang::get("DOWNLOAD_SPEED").c_str(), (downloadSpeed), Lang::get("BYTES_PER_SECOND").c_str());
+					Lang::get("DOWNLOAD_SPEED").c_str(), (downloadSpeed / 1000), Lang::get("KB_PER_SECOND").c_str());
 					// Extracting.
 		} else if (progressBarType == 1) {
 			snprintf(str, sizeof(str), "%s / %s (%.2f%%)",