Improved block _button scripts

blocks/cpu_temp_button.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 case $1 in
-    1) exec termite -e "htop -s PERCENT_CPU" ;;
-    2) exec termite -e "htop" ;;
-    3) exec termite -e "htop -s PERCENT_MEM" ;;
+    1) exec "$TERMINAL" -e "htop -s PERCENT_CPU" ;;
+    2) exec "$TERMINAL" -e "htop" ;;
+    3) exec "$TERMINAL" -e "htop -s PERCENT_MEM" ;;
 esac

blocks/volume_button.sh

@@ -1,6 +1,5 @@
 #!/bin/sh
 case $1 in
-    1) pamixer --toggle-mute ;;
-    2) exec pavucontrol-qt ;;
-    3) pamixer --set-volume 60 ;;
+    1) pactl set-sink-mute @DEFAULT_SINK@ toggle ;;
+    3) pactl set-sink-volume @DEFAULT_SINK@ 50% ;;
 esac