[Shelly1] Test build using 2M512 flash layout to allow OTA

Just merged new flash layout: esp8266/Arduino#5103
So as a test, using the staged version.

Author: TD-er

platformio.ini

@@ -180,7 +180,9 @@ build_flags               = ${common.build_flags} -Wl,-Tesp8266.flash.2m.ld
 board_build.flash_mode    = dio
 board_build.f_cpu         = ${common.board_build.f_cpu}
 build_unflags             = ${common.build_unflags}
-build_flags               = ${common.build_flags} -Wl,-Tesp8266.flash.2m.ld
+build_flags               = ${common.build_flags} -Wl,-Tesp8266.flash.2m512.ld
+platform                  = ${core_staged.platform}
+
 
 [esp8266_4M]
 board_build.flash_mode    = dio
@@ -651,7 +653,7 @@ build_flags               = ${Sonoff.build_flags} -D PLUGIN_SET_SONOFF_POW_R2
 upload_speed              = ${common.upload_speed}
 monitor_speed             = ${common.monitor_speed}
 framework                 = ${common.framework}
-platform                  = ${common.platform}
+platform                  = ${esp8266_2M.platform}
 lib_deps                  = ${common.lib_deps}
 lib_ignore                = ${common.lib_ignore}
 lib_ldf_mode              = ${common.lib_ldf_mode}

src/WebServer.ino

@@ -5480,10 +5480,10 @@ void handle_sysvars() {
   addTableSeparator(F("System"), 3, 3);
   addSysVar_html(F("%uptime%"));
   addSysVar_html(F("%unixtime%"));
-  addSysVar_html(F("%sunset%"));
-  addSysVar_html(F("%sunset-1h%"));
   addSysVar_html(F("%sunrise%"));
   addSysVar_html(F("%sunrise+10m%"));
+  addSysVar_html(F("%sunset%"));
+  addSysVar_html(F("%sunset-1h%"));
 
   addTableSeparator(F("Special Characters"), 3, 2);
   addTableSeparator(F("Degree"), 3, 3);