When doing inline rename on a named type (interface, enum, or class) show a checkbox to also rename the file.

The checkbox will always show if the kind supports file rename

The checkbox will be disabled if any of the following is true:
- The type is a partial type with multiple definition locations
- The type does not currently match the file name

Extend ISyntaxFactsService to add IsTypeDeclaration
Implement file rename as part of conflict resolution for inline rename. This will allow other features to do file rename that also use the conflict resolver, all they need to do is set the correct option.

make sure commit from rename daskboard on closed razor file doesn't crash VS but show error message

Although this could be split out more precisely, for now we'll just
move the entire feature to the WPF layer. IEditorInlineRenameService.cs
is left behind however, as that interface is implemented by TypeScript
and other languages. For now I'm considering EditorFeatures.Wpf to be
an implementation assembly for now and so interfaces implemented
should still live in the base assembly.

In CSharpEditorFeatures and BasicEditorFeatures, there was the
implementation of IEditorInlineRenameService which had no language
specific details other than the language name the service was exported
for. I have moved those into EditorFeatures.Wpf rather than have
additional assemblies for language specific stuff, since I anticipate
that to be nearly non-existent.

Fixes
https://devdiv.visualstudio.com/DevDiv/_workitems?id=391624&_a=edit

- Inline Rename fields now consist of a themeable/customizable
background, foreground, and border. The border is used in High Contrast.
- Resolved and Unresolved conflict borders can now be themed &
customized.
- Resolved and Unresolved conflict borders now have different dash
styles so they are distinct from each other and regular Inline Rename
fields. The Dashboard shows a key indicating which type of conflict
corresponds to which border dash style.

Related to #9960

Fixes #5076

- Introduce instructional text when the dashboard is first shown (or when newName = originalName). This should help users who are used to the pre-VS2015 modal dialog learn to edit the identifier inline in the editor. If we at some point add a way to launch Inline Rename with a new name already specified, we'll need to be a bit more careful about how to both show that new name *and* the instructional text.

- Show the newName as the user types it

- Rearranging the info in the window to flow a bit better:
    - Heading (rename from x to y, or show getting started instructions)
    - Settings
    - Summary (# locations to be updated and any conflict info).

- Slightly changed the reference count text from "found 1 reference in 1 file" (which made sense in large solutions where you saw "Searching..." for a while, which then got replaced with this text) to a more standalone version of "Rename will update 1 reference in 1 file."

* Dashboard is no longer focused when starting inline rename
* F2 outside a rename field commits the current session and starts a new
one
* F2 within a rename field focuses the dashboard

* Dashboard is no longer focused when starting inline rename
* F2 outside a rename field commits the current session and starts a new
one
* F2 within a rename field focuses the dashboard

This change adds support for renaming methods that are referenced in nameof expressions during Inline Rename, Rename Tracking, and RenameSymbolAsync. For all of these features, there are three primary cases:

- Rename invoked from a method declaration with no overloads: Any nameof expressions that reference the method are unambiguous and are therefore updated to the new name.
- Rename invoked from a method declaration with overloads: In this case, any references in nameof expressions are renamed only if the RenameOverloads option is set to true (e.g. when the user checks the "Rename overloads" checkbox in Inline Rename).
- Rename invoked from a reference in a nameof expression: We always rename all overloads by automatically setting the RenameOverloads option to true and disabling Inline Rename's "Rename overloads" checkbox.

Fix #409:
Add explicit StringComparison.Ordinal or StringComparison.OrdinalIgnoreCase where it was intended,
or replace single-char string literals with chars literals.
Also, provide InvariantCulture in TryParse where it was intended.

     * Gray background
     * No border
     * No padding on top or right
     * Colored bar at bottom of dashboard

     This requires us to set UseLayoutRounding=True, since we're trying to draw straight lines (https://msdn.microsoft.com/en-us/library/system.windows.uielement.uselayoutrounding%28v=vs.95%29.aspx). (changeset 1411219)