[NTLUG:Discuss] Installing usable version of Firefox on Raspberry Pi

[Ralph Green]

Howdy,
  I am trying to setup a couple of Raspberry Pis with the current
distro of Raspbian, which is called Jessie.  The problem is getting a
usable web browser.  So far, I am stumped and I am hoping someone here
can show me what obvious thing I am missing.

 Raspbian used to use a fork with no branding, which was called
iceweasel.  Firefox broke cookie handling so badly starting in version
44 that I can't use it any more.  The branding issues were resolved
and now the only binary version of firefox in the repository is
Firefox ver 45.  So, I thought I would install the source package for
iceweasel 38, build a .deb and install it.  I tried this:
apt-cache madison iceweasel    and got back:
 iceweasel | 38.8.0esr-1~deb8u1 |
http://archive.raspbian.org/raspbian/ jessie/main Sources

  That looked good.  It meant the version 38 source was seen.  So, I
tried installing the source with:
apt-get source iceweasel=38.8.0esr-1~deb8u1    and I got back:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Picking 'firefox-esr' as source package instead of 'iceweasel'
E: Can not find version '38.8.0esr-1~deb8u1' of package 'iceweasel'
E: Unable to find a source package for firefox-esr

  The archive seems to have the source code, to wit:
http://archive.raspbian.org/raspbian/pool/main/i/iceweasel/

  I think that line about picking firefox-esr may be telling me
something important, but I have not figured out what to do with the
information.  Any suggestions?
Ralph