Bsongis/x7d fixes (#4019)

* [X7D] Various fixes

[Others]
- Fixes the Mixer / Inputs MOVE / COPY problem on X9E
- Adds the copy/paste/rename feature in SDCARD menu on X7D/SKY9X
- Merges some duplicated code using the new directory structure
- Cosmetics

radio/src/gui/128x64/widgets.cpp

@@ -248,12 +248,20 @@ void drawStatusLine()
 
 void drawProgressBar(const char * label)
 {
-  // TODO
+  lcdDrawTextAlignedLeft(4*FH, label);
+  lcdDrawRect(4, 6*FH+4, LCD_W-8, 7);
+  lcdRefresh();
 }
 
 void updateProgressBar(int num, int den)
 {
-  // TODO
+  if (num > 0 && den > 0) {
+    int width = ((LCD_W-12)*num)/den;
+    lcdDrawSolidHorizontalLine(6, 6*FH+6, width, FORCE);
+    lcdDrawSolidHorizontalLine(6, 6*FH+7, width, FORCE);
+    lcdDrawSolidHorizontalLine(6, 6*FH+8, width, FORCE);
+    lcdRefresh();
+  }
 }
 
 #if defined(CPUARM) || defined(CPUM2560)