Improve consistency of help strings

Fixes include rework of text, missing or extra spaces, wrong
capitalization and no sentence style capitalization.

Co-Authored-By: Diane Fleming <diane.fleming@rackspace.com>
Change-Id: I480a8f1816b0698a10165318fe25b4f58e8d2700
Correct spelling of logger for dispatcher.file

Closes-Bug: #1272176
Change-Id: Ia4d700869829142bd3b9e136b8a735756b92ea94
Merge "Improve consistency of help strings"
Merge "Correct spelling of logger for dispatcher.file"