Adds elite bar graph to spam duplicates report
Fix width of summary table in spam duplicates report
Cosmetic: reindent js files

Some js files were using a 2-space indent and some were using a 4-space
indent. This changes them all so they all use a 4-space indent.
[bug 947278] Tweak actual_ip_plus_desc

I saw a couple of errors from production which kicked up a
"MemcachedKeyLengthError: Key length is > 250" error. I tried to create
a test using data from the errors, but wasn't able to reproduce the
problem.

While doing that, I decided to write a test for actual_ip_plus_desc to
vaguely verify correctness specifically with unicode descriptions. I
also tweaked the algorithm so it's less likely to produce a key that's >
250 characters.