Citro2d switch (#175)

* Switch from pp2d to citro2d

* Fix various bugs by updating libarchive

* Begin work on translation infrastructure

* Switch to libpng for various improvements

* Fixed race condition in icon scrolling

* Use spritesheets to load sprites marginally faster and use less memory

* Various Readme fixes

* Huge improvements to QR reader speed and screen tearing

* Don't try to preview themes/splashes when there are none

* Prevent playing audio when ndspInit() fails

* Don't wait for audio to load before displaying preview

* Fix bug when shuffle themes didn't have BGM

* Fix bug caused by files not being zeroed out when created

include/common.h

@@ -28,6 +28,8 @@
 #define COMMON_H
 
 #include <3ds.h>
+#include <citro3d.h>
+#include <citro2d.h>
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -40,7 +42,7 @@
         POS(); \
         DEBUG(__VA_ARGS__)
 
-#define FASTSCROLL_WAIT 1.5e8
+#define FASTSCROLL_WAIT 1e8
 
 typedef enum {
     MODE_THEMES = 0,
@@ -54,36 +56,6 @@ extern const int entries_per_screen_v[MODE_AMOUNT];
 extern const int entries_per_screen_h[MODE_AMOUNT];
 extern const int entry_size[MODE_AMOUNT];
 extern bool quit;
-
-enum TextureID {
-    TEXTURE_FONT_RESERVED = 0, // used by pp2d for the font
-    TEXTURE_ARROW,
-    TEXTURE_ARROW_SIDE,
-    TEXTURE_SHUFFLE,
-    TEXTURE_SHUFFLE_NO_BGM,
-    TEXTURE_INSTALLED,
-    TEXTURE_PREVIEW_ICON,
-    TEXTURE_SORT,
-    TEXTURE_DOWNLOAD,
-    TEXTURE_BROWSE,
-    TEXTURE_LIST,
-    TEXTURE_EXIT,
-    TEXTURE_BATTERY_0,
-    TEXTURE_BATTERY_1,
-    TEXTURE_BATTERY_2,
-    TEXTURE_BATTERY_3,
-    TEXTURE_BATTERY_4,
-    TEXTURE_BATTERY_5,
-    TEXTURE_BATTERY_CHARGE,
-    TEXTURE_QR,
-    TEXTURE_PREVIEW,
-    TEXTURE_REMOTE_PREVIEW,
-    TEXTURE_SELECT_BUTTON,
-    TEXTURE_START_BUTTON,
-
-    // always the last
-    TEXTURE_REMOTE_ICONS,
-    TEXTURE_ICON = TEXTURE_REMOTE_ICONS + 24, 
-};
+extern bool dspfirm;
 
 #endif