Updated icons, buttons, and display; issues still with Main Room button, and sliders.

sim/CMakeLists.txt

@@ -66,6 +66,7 @@ add_executable(thermostat_sim
     # Anything added here must stay free of hardware access -- drivers and
     # HTTP transport stay on the device side.
     ${FW_ROOT}/main/ui/ui_manager.c
+    ${FW_ROOT}/main/ui/icon_font.c
     ${FW_ROOT}/main/api/ha_data.c
 
     ${CJSON_DIR}/cJSON.c