Added a portable library project type
Added an F# signature file template
Added new template types to the master project and xml addin
Updated existing project templates

Removing the old warning
Remove version specific information
Removed extra line feeds at beginning
Updated names and descriptions to be similar to VS
Update templates.FSharpConsoleProject.xpt.xml
Merge pull request #333 from 7sharp9/portablesupport

Added Portable library project template and blank fsi signature template