Debian package: Correct comment in debian/bin/conkeror wrapper
Debian package: adopt to pre<n> version semantics
contrib/debian/nightlybuild.sh: Make date compatible with the official Debian packages
Debian package: Support using "iceweasel -app" since there's no more xulrunner. :-(
contrib/debian/update.sh: Rename directory back if old directory was named just conkeror

i.e. if it was a date based directory, make it a date based directory
again, if it was named just "conkeror", it should be named just
"conkeror" afterwards, too.
Debian package: Make alternative dependency only on iceweasel >= 30

Rationale:

Conkeror would work fine with any Iceweasel version greate 3.5. But
any Iceweasel version between 3.5 and 30 pull in the according
Xulrunner package and that won't change retroactively. (It only did
for Iceweasel 30 of which the first package version still built a
Xulrunner package.)

So for Iceweasel/Xulrunner <= 30 it's irrelevant if iceweasel is
installed, too, or not. Conkeror then only needs Xulrunner although it
could use "iceweasel -app" instead if iceweasel is installed.

Thanks to Emilio Pozuelo Monfort for the discussion around that topic.
Debian package: Update README.Debian and explain how /usr/bin/conkeror works
Debian package: Supporting "iceweasel -app" closes Debian bug #751557
contrib/debian/nightlybuild.sh introduction: Update copyright years and package names
contrib/debian/nightlybuild.sh: Only build and upload if something has changed
contrib/debian/nightlybuild.sh: Use fgrep in a way it doesn't get caught by "set -e".
Upload to Debian as 1.0~~pre-1+git140616-1
Fix Google Images webjump
Switch those Google webjumps to HTTPS which redirect there anyway
Debian package: Most Debian webjumps now with HTTPS
Debian package: debfile webjump working again
Debian package: debtracker webjump added

Thanks Christoph Egger for the suggestion!
Debian package: lpbugnr webjump added

The ubuntubugs webjump only works for source packages, but not for bug
numbers (as with the debbugs webjump), so this one add this
functionality for Ubuntu and other launchpad-hosted projects.
Debian package: Make patches conform to DEP-3

Also update copyright years for deb-webjumps.diff.
Debian package: Enable HTTPS for Ubuntu webjumps where available