Fix list view for pdns.

Identical fix to b420dff.

Bump copyright year.

Better error messages when PDNS fails.

When a PDNS lookup fails, print the escaped response. This makes it
possible to distinguish between nothing returned and an error.

While here, fix whitespace and move a comment to the proper location.

Merge pull request MITRECND#5 from mpars0ns/master

Fixing issue from a UnboundLocalError Exception

Fix list view.

When viewing a list dataVersion is not included in the filter, so
we have to conditionally add it to any results.

Merge branch 'master' into mongo_include

Merge pull request MITRECND#3 from MITRECND/list_fixes

List fixes

Fixed sorting bug in table UI, also made Version a sortable column

Merge branch 'historical'

Conflicts:
	README.md

Merge pull request MITRECND#2 from jedisct1/mongodoc

Indexing domainName makes mongoimport *way* faster.