fixed a minor bug of Chinese UTF8 translation
change chinese translation of "null" and "empty"
Review/Update BUGS CREDITS HISTORY and TODO before release
Mark PPA release 5.1
Update/Fix History
Fix typo in variable name

It only concerns an fatal error message, no bad impacts
Cosmetic fix on Vacuum confirmation page for the "Freeze" checkbox

All other options checkbox have a space between the checkbox and their
label.
Completely udpate chinese utf8 according to english.
langcheck will give correct instruciton if the language parameter is added with php extension
Rename PPA version from 5.1 to 5.2-dev.
Explicit support for PG 9.3.
Processes: Fix <= 9.1 to show only db related processes & clean dbname.

Fix bugs introduced in commit d571ecae7b by ioguix on 2012-09-21.

I can't tell why these changes crept in along with the rest of
the fixes in that commit.  It looks like a testing version was
committed.
Fix so signals are sent to the right pid.
Add support for user-sent signals. (9.2+)
Make process screen report information in a way that makes sense in postgres 9.2
Also add in the waiting option, making it work back to at least 8.1
doTree() does not take an argument.
Have PG > 8.1 && <= 9.1 reporting waiting processes on process page.