Update envsetup.sh with command to push git tags
Separate logcat() into logcat_networklog() and logcat_all()

Note that both logcat functions will log all entries to logfile, however
the logcat_networklog() function will filter the visible output to show
only NetworkLog entries (while still logging all entries to logfile)
Rename more() to hasMore()
Fix possible null pointer exception where settings might not have been loaded yet