UX Overhaul (#305)

* Fix bgm checking bug

* Converted install and menu options into button menus rather than combos

* Fix sort order

* Various touch screen changes so that most functions can be done via touch

 * Dim theme list when navigating menus

* Translation framework implemented

* bug when no themes loaded fixed

* Fix theme preview regression introduced in d037691

include/common.h

@@ -54,6 +54,8 @@ static inline int max(const int a, const int b)
 
 #define FASTSCROLL_WAIT 1e8
 
+#define BETWEEN(min, x, max) (min < x && x < max)
+
 typedef enum {
     MODE_THEMES = 0,
     MODE_SPLASHES,
@@ -61,6 +63,14 @@ typedef enum {
     MODE_AMOUNT,
 } EntryMode;
 
+typedef enum {
+    DRAW_MODE_LIST = 0,
+    DRAW_MODE_INSTALL,
+    DRAW_MODE_EXTRA,
+
+    DRAW_MODE_AMOUNT,
+} DrawMode;
+
 extern const char * main_paths[MODE_AMOUNT];
 extern const int entries_per_screen_v[MODE_AMOUNT];
 extern const int entries_per_screen_h[MODE_AMOUNT];