Project configuration cleanup

[hultqvist]

This is the result if #2

All project files in Defs now only have one configuration: Debug/AnyCPU

Fixed or ignored various warnings mostly related to malformed comments.

[arakis]

Commit 14d332e seems to be fine. Commit bf81251 is mostly ok, too, but maye we shuld discuss about it first.

You're right, the chars <, > and so on have to be written down in encoded form. But fact is, that this was "never" a problem for visual studio or monodevelop (as i remind). Both IDEs shows the chars like expected. Only a warning will be shown. On the other side, avoiding the html encoding makes the comments more readable / modifyable in the source code.

The specific warning ("Error code") can be supressed.

Your other comment fixes seems to be ok (removed unneeded spaces, other attribute names and so on).

[arakis]

I just checked the comments behavior. They need to be encoded. So, the merge is fine.