Fix issues with the indenter and add some tests

* One could not arrow left and go to the previous line
* Indents would be all wrong if you hit enter in the middle of a line

There are two ignored tests. The behaviours work in MD/XS, but I don't know how to properly simulate hitting enter from the tests, so expected indentation doesn't happen.
Merge pull request #654 from rojepp/indent_fixes

Fix issues with the indenter and add some tests
Add initial version of FSharpUnitTestTextEditorExtension
Add FSharpUnitTestTextEditorExtension to addin xml
	Add FSharpUnitTestTextEditorExtension to fsproj
Update unit test to include MonoDevelop.NUnit
Add support for double-tick tests
Remove test code
Refactored Language service to expose getConfig for current project ConfigurationSelector
Added performance enhancement to only process tests when a project references unit.framework.dll

Also addressed wrapping arguments in TestCases and using a SrtingBuilder
Incremented version
Removed active document check
Added unit tests
Merge pull request #656 from 7sharp9/fsharpTestExt

Add initial version of FSharpTestTextEditorExtension for integrated unit tests