docs: rewrite sentence about HTTP admins interface
Remove bashisms from JS test runner

1. Stop using bash arrays.
2. Account for the sh-builtin `echo` not having an `-n`
   argument on BSDs.
3. Strip spaces from `wc -l` output when calculating the
   number of tests for 1.

Patch by Klaus Trainer & Jan Lehnardt.

Closes COUCHDB-1793.
Update NEWS and CHANGES w 1.3.1 entries
COUCHDB-1784 update license.skip to support VPATH builds
Update CHANGES for 1.3.1

COUCHDB-1696
Forward port 1.3.1 changes
Remove 1.2.3 sections
Distribute test_setup.js
Merge remote-tracking branch 'upstream/master'