Add more zh_CN translations

Change-Id: I93d5772b3a95dc5606070778a89470510005bc6d

web/gui/src/main/resources/org/onosproject/ui/lion/core/fw/Mast_zh_CN.properties

@@ -17,7 +17,7 @@
 # Localization strings for Masthead
 
 # Tooltip for context-sensitive help button [?]
-#tt_help=
+tt_help=显示当前视图的帮助页面
 
 # Logout button
-#logout=
+logout=注销

web/gui/src/main/resources/org/onosproject/ui/lion/core/fw/Nav_zh_CN.properties

@@ -17,9 +17,9 @@
 # Localization strings for Navigation Panel
 
 # Category headers
-#cat_platform=
-#cat_network=
-#cat_other=
+cat_platform=平台
+cat_network=网络
+cat_other=其他
 
 # Note that contributed views will be adding their own localized titles
 #  for their nav item, with a property key "nav_item_{viewID}".

web/gui/src/main/resources/org/onosproject/ui/lion/core/fw/QuickHelp_zh_CN.properties

@@ -17,16 +17,16 @@
 # Common text in the Quick Help panel
 
 # Panel title
-#qh_title=
+qh_title=快速帮助
 
 # Hint for \ and / keys
-#qh_hint_show_hide_qh=
+qh_hint_show_hide_qh=显示 / 隐藏 快速帮助
 
 # Escape key hint
-#qh_hint_esc=
+qh_hint_esc=关闭面板或取消选定
 
 # T key hint : toggle the ui theme (between light / dark)
-#qh_hint_t=
+qh_hint_t=切换主题
 
 # Common for a lot of views adding their own escape-key handler
 qh_hint_close_detail=关闭详细信息面板