Remove TestWorkspace constructors that are given a list of lines.

Remove # character from VSIX descriptions.

Improves location used for base interface errors when partial classes are used

These characters cause problems with MEF with how they make directory paths.
The bug in MEF will get fixed in Dev15.  However, in the meantime, this gives
us a workaround so that we stop getting mef corruption errors.

THese helpers were used to make VB workspace construction easier when VB didn't have
an easy way to make multi-line strings.

Now htat VB can make multi-line strings, we no longer need these entrypoints.

Apply non-printable escaping to characters

Use Enumerable.Repeat and code cleanup

Remove synchronous method.

Make more of the IDE layer async.

Ask dotnetbot to kick off vsi tests

Also include a 'git fetch upstream' step for the people doing
merges.  This is useful if they aren't already up to date.

Fixed app.config casing

don't show `(Awaitable)` for dynamic objects

use predefined type keywords if the real types would only be bracketed

e.g., always prefer `String` to `[String]` in VB

...by adding or removing ObjectDisplayOptions.EscapeNonPrintableCharacters
as appropriate.

Ensured that all uses of app.config in our product / test code base is
used in the lower case form.  This helps with our Unix efforts where
mixing the case can be significant.  Updated all of the project
references to ensure they used the lower case version as well.

removed unused usings

added callstack to AD0001 and added reg key that will crash VS instea…