Remove SolutionExplorer ProjectItem base classes added in 56136680

Fixes #556 - Add Fields/Constants to VB Nav Bar

Fix incorrect glyph for locals and parameters.

* Add projects for the runner and utilities

* added benview uploader

* added trace-file backup

* remove old scripts and tools

* Misc fixes

* Added a test-this-please jenkins job

* Update VirtualTreePoint.cs

Correct the braces so that they are escaped.

* Update VirtualTreePoint.cs

Convert the `String.Format` to an Interpolation String.

* Update VirtualTreePoint.cs

Correct the variable.

removed culture dependency from ConversionsTests

Block any commits that derive from a bad merge we removed via force push

- It should no longer block future -> master merges, since we've done
  that now.
- It should block any new pull requests that contain the previous
  bad merge.

fix issue with telemetry.

Replace property with method

it looks like diagnostic telemetry got broken when we introduced a new flag for diagnostic engines in update 1.

also recent engine v2 changes didn't report all telemetry data

Merge master into future

Make compiler familiar with TH2 format of DeprecatedAttribute.

* Bug 217740: Repro and test harness for C#

* Testing and fixing loading scenario in C# and VB

* Verifying VB case using attribute on field

* Adding more tests

* Adding VB tests

* Adding tests

* More tests on fields with double-attributes

* New test constraint

* Fixing VB side to new test constraints

* Fixing C# side to new test constraints

* Fixing remaining tests

* Adding comments

* Fixing VB field scenario too

Assert that completion has a TypeInferenceService