Typo in paging docs for curl param

Signed-off-by: Ken Barber <ken@bob.sh>
Fix catalog terminus to use v3 of the command
Merge pull request #649 from kbarber/maint/burgundy/typo-in-docs-for-paging

Small typo in v3 docs for paging
Fix typo and add extra assertion in transaction-uuid test
(PE-1452) Allow querying for containing-class=null

Prior to this commit, you could not query for containing-class = null.
This commit provides support for querying against null, and it also
allows for other fields (property, message, file, line) to now be
queried for null.
(PE-1452) Explicitly check for nil
Merge pull request #650 from shakedown/dev/burgundy/pe1452-query-null-support

(PE-1452) Allow querying for containing-class=null
Rename all of the inconsistent files to the plural form

We had a lot of related files where some versions where named
in the singular and some in the plural.  We decided to
standardize them.  This commit simply renames the files; will
update the code in subsequent commits in hopes of preserving
diffs.
Fix all references to previously singular namespaces

Conflicts:
	src/com/puppetlabs/puppetdb/cli/export.clj