Fixed Dashboard Link

Dashboard link points nowhere
Clarification of Upgrade Instructions

Clarifying some of the upgrade instructions.
Fixed some typos and grammer.
Removed duplicate reference to composer update in
upgrading_v0.7_to_v.08.md
Fix variable naming error for #97
Merge pull request #94 from Nutbolt52/dev

Fixed Dashboard Link
Merge pull request #95 from Nutbolt52/doc

Clarification of Upgrade Instructions