Initial implementation to margin
Refactor DevMargin into a separate file
Include the buffer type on the dev margin, and select the main buffer by default
Fix margin background color on VS2010
Opening the buffer in a new document window now works, but needs lots of improvements
Add some extra error handling to avoid crashing VS
Hack: Make temp file readonly so that the document window is readonly
Complement combobox styles
Merge branch 'devToolbar' into develop