added QED as supported image format and cleaned up

Change-Id: Ief5919a7b028dd3e721355f1fe332191a393584e
Thorough edit of installation chapter.

1.Moved all procedures into <orderedlist> tags. Corrected grammatical errors. Added descriptive tags (e.g. <filename>). Made chapter titles consistent. Updated from quantum to neutron (to deal with upstream changes already made).

2.Corrected passive -> active. Moved all <orderedlist> tags into <procedure> (per new conventions). Removed all 'refer to's. Moved all links into xrefs.

Change-Id: I9d3536bc2bef422e835fe069fd1034f6aa318d91
Merge "added QED as supported image format and cleaned up"
Merge "Thorough edit of installation chapter."