update chinese simplified translation
Updated Vietnamese translation string
Remove fallback restrictions
Add service ping
Read meta when needed only
Revert "Read meta when needed only"

This reverts commit 793bcb71f5a362b4da04ff066ba729ef4c329a7c.
Merge pull request #1118 from ngonchan/master

Updated Vietnamese translation
Updated changelog
Merge pull request #1113 from liudongmiao/patch-translate

Update Chinese simplified translation