Tweaks and text formatting for pull request #82
XPath Property Editors
Update general.md
Update general.md
Update general.md
Update general.md
Add Mvc to Content Picker Property Editor
Added Upload Property Editor
Added Simple Editor Property Editor
Text tweak
TinyMCE images
Update README.md
New note about IIS7+ and custom error pages

mentioned the httpErrors passthrough setting
Started adding config docs
updated config doc
added config to the index
fixed bolding
updating docs for config
updating config docs
updating config docs