Always compile the PRETTY version of the JS UI. This allows users to
add ?dbg=1 to the URL to load the pretty formatted JS and isolate
client-side errors, producing better error reports for developers
working on Gerrit.
The pretty JS format is more verbose and not commonly requested.
It is not compressed in the WAR, under the assumption that it is
only used when a bug is reliably occurring and the user wants to
determine its source.
Change-Id: I3058cb3c7233d6b93ce7a4f1f59451d3ea7f5cdc
d07a622ba1