DOC-672: Edits to CloudWatch concepts.
Added euscale-put-scaling-policy command.
Added euscale-put-scaling-policy to TOC
Deleting groupinstall step in upgrade section, per gholms.
DOC-676: Redoing narratives for instance concepts and overview, so I have a good place to put the VM types narrative.
Merge branch 'master' of git.eucalyptus-systems.com:documentation
Typo fixes & general sprucing up.
Added euscale-put-scheduled-update-group-action;
added line breaks to some examples for legibility.
Fixed some parameters.
A few more pre tech-review edits.
Added additional documentation infomration to resolve DOC-824, DOC-820 adn DOC-779
Updated landing page helps to include expand-os
Added clearer documentation regarding filters for users and groups - DOC-779; cleaned up a few copy and paste errors in the users, groups dita.
Updating euca2ools euascaling examples and output.
Fixed DOC-479: changed example domain name.
Added page help for for the register snapshot as image dialog
DOC-676: more restructuring of the instances section.
Merge branch 'master' of git.eucalyptus-systems.com:documentation
Updating euscale concepts and tasks per tech review; fixed example description in euscale-execute-policy command topic
Updated euscale documentation per tech reviews