Remove node UI and have tray icon open local/remove UI server

No more "node UI". UI provided by 3rd party.

"Open UI" tray icon menu item now attempts to open UI at various
local servers (see Settings.uilocalServers) or some random
remote server (Settings.uiRemoteServers).

Default UI port now 12388 (Settings.uiPort).

src/main/resources/i18n/SysTray_en.properties

@@ -22,7 +22,7 @@ NTP_NAG_TEXT_UNIX = Install NTP service to get an accurate clock.
 
 NTP_NAG_TEXT_WINDOWS = Select "Synchronize clock" from menu to fix.
 
-OPEN_NODE_UI = Open Node UI
+OPEN_UI = Open UI
 
 SYNCHRONIZE_CLOCK = Synchronize clock
 

src/main/resources/i18n/SysTray_zh.properties

@@ -22,7 +22,7 @@ NTP_NAG_TEXT_UNIX = \u5B89\u88C5NTP\u670D\u52A1\u4EE5\u83B7\u5F97\u51C6\u786E\u7
 
 NTP_NAG_TEXT_WINDOWS = \u4ECE\u83DC\u5355\u4E2D\u9009\u62E9\u201C\u540C\u6B65\u65F6\u949F\u201D\u8FDB\u884C\u4FEE\u590D\u3002
 
-OPEN_NODE_UI = \u5F00\u542F\u754C\u9762
+OPEN_UI = \u5F00\u542F\u754C\u9762
 
 SYNCHRONIZE_CLOCK = \u540C\u6B65\u65F6\u949F
 

src/main/resources/node-management-ui/index.html

@@ -1 +0,0 @@
-Node UI goes here!