Set Copy Local to True for the output window interfaces assembly so composition errors occur as late as possible
Add helpful error message if output window service cannot be located
Merge pull request #91 from sharwell/improve-error-message

Improve error message if output window service cannot be located
Add top-level options page for DartVS
Add options for Dartium location and Dartium profile location (fixes #83)
Use resources for language display name and installed product registration
Merge pull request #89 from sharwell/fix-83

Add general "DartVS" options page
Added empty DartVS.Common project.

This is to house things that are shared across all projects.
Moved StdIOService to Common.
Removed some DanTup prefixes from assembly info.
Moved some common AssemblyInfo strings to SharedAssemblyInfo.
Product name/desc tweaks (remove DanTup's).
Merge pull request #80 from DanTup/project-refactor

Created a "Common" project for shared classes; AssemblyInfo tweaks.
Extend StdIOService to take a working directory.

This will be required for pub support.
Extract GetSdkPath out into DartVS.Common.

We'll need this for Pub integration too.
Extract remote Sdk Location into constant.
Added a TODO about a multi-threading/race condition.
Removed unused cancellation token.

It's misleading to take a cancellation token if it's not used. We can
add this back in if we add support for it.
Return process exit code from StdIOService.
Remove onsolete constructor.

Pass SDK in for working dir in the cases where we don't really care.