Small fixes to clean up Image admin guide

These are all found in the DISQUS comments at: http://docs.openstack.org/docblitz/openstack-image-service/admin/content/ . Many of these are artifacts of an RST > docbook conversion, so the fixes are simple.

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/glance-api-server.html
Add period (.) after last word in section "readonly".

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/glance-registry-servers.html
Please provide actual links to the "Architecture section" and the "Registries section".

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/installing-from-packages.html
Use "..., follow the instructions in the section that applies to your environment."

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/debianubuntu.html
MA: Interestingly, the contents of this page are not being duplicated on this page, but starting with the next page, the duplication begins again. [It appears to me that this bug has now been fixed, MA, 2-2-2012]
AG: Yep, odd! I have a question into the Doc Tools team on this one, it's a weird one.
MA: I am seeing a strange character comprised of 4 dots (apparently representing a new-line character?) after each of the numbered list items and before the command on the command-line.
AG: Ah, that is a result of the rst2docbook conversion. I'll fix, thanks for the catch!

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/installing-from-source-tarballs.html
Same strange character (represented by 4 dots) after item #2 in the list and before the command on the command-line.

I suggest using a carriage return to split the one line into 2 command-lines for item #3.

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/installing-from-a-bazaar-branch.html
Use "..., follow the instructions in this section."

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/debianubuntu-1.html
Same strange character (4 dots) after numbered items. (I won't repeat this bug anymore.)

Also suggest splitting command-lines for #1 into 2 separate lines using a carriage return. (I won't repeat this bug anymore.)

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/image-identifiers.html
Rather than use quotations in the text, I would use the code font to mark the URI components.

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/image-registries.html
Quotation marks around "registries" should be double quotation marks rather than back quotes.

Provide actual link rather than using "section about Controlling Servers".

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/api-in-summary.html
In the other Rackspace API docs I am familiar with, we use a table for this info with 3 headers for the columns: Verb, URI, Description.

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/filtering-images-returned-via-get-images-and-get-imagesdetail.html
I would use italic font for the values of the query parameters rather than code font to show that they are variables to be supplied by the user.

I would also give an example of the URI showing some of the query parameters.

http://docs.openstack.org/docblitz/openstack-image-service/admin/content/post-images.html
On the third bullet in the list, fix typo: "... and must be one of ..."

On the fourth bullet, add or: "... is ari, aki, or ami, ..."