Handle denials of power appropriately

src/display/Display.h

@@ -19,6 +19,8 @@
 // This execution delay is basically only used for initial activation, so it can be set to a higher value
 #define DISPLAY_MAX_EXECUTION_DELAY_MS 100
 
+#define TAG "Display"
+
 class Display{
     protected:
         //how many chars are on current line