TPT is now shown in desktop menus when installing on linux

uses powder-48.png as icon + 3rd .desktop entry

resources/icon/icontofile.py

@@ -0,0 +1,7 @@
+import sys
+
+with open(sys.argv[1], "rb") as icon:
+	icondata = icon.read()
+output = ["0x{0:02X}".format(ord(byte)) for byte in icondata]
+for line in range(len(output)/16+1):
+	print(", ".join(output[line*16:(line+1)*16])+",")