General updates to the dashboard chapter

As per the bug, updated the wording for the Dashboard chapter.
Watch this space for the rest of the book.

Change-Id: Idc68e3f241392cae48b7e786951222984c337e09
Partial-Bug: #1251195
Fix grammar in HA Guide

Change:
being -> be

Change-Id: I81f2e28e2155be16564edecbc9ce7ebd9d9583a3
Closes-Bug: #1257461
Grammatical Changes to documentation

Changed datas to data
Changed IP to IP addresses since we are referring to possibly more than 1 IP
(not a single)

Change-Id: Ifc5bba547960ef50112a20ea256d93fad1408353
Merge "General updates to the dashboard chapter"
Merge "Grammatical Changes to documentation"