FIX: Scheme Name in Control Scheme editor menu that gets reset when editing devices (ISXB-763)

[bmalrat]

Description

Fixed Scheme Name in Control Scheme editor menu that gets reset when editing devices

Changes made

In ControlSchemesView

• Fixed RedrawUI to use the control scheme name or new/renamed one currently in edition
• Fixed control scheme name text box change callback to now support :
  1. Trim the name to prevent having space at the begin/end of the name
  2. Prevent renaming the scheme if you change the name and put back the original name in the same edition without saving
  3. Write back in the UI if a unique name has been generated

Checklist

Before review:

• [X] Changelog entry added.
  • Explains the change in Changed, Fixed, Added sections.
  • For API change contains an example snippet and/or migration example.
  • FogBugz ticket attached, example ([case %number%](https://issuetracker.unity3d.com/issues/...)).
  • FogBugz is marked as "Resolved" with next release version correctly set.
• [ ] Tests added/changed, if applicable.
  • Functional tests Area_CanDoX, Area_CanDoX_EvenIfYIsTheCase, Area_WhenIDoX_AndYHappens_ThisIsTheResult.
  • Performance tests.
  • Integration tests.
• [ ] Docs for new/changed API's.
  • Xmldoc cross references are set correctly.
  • Added explanation how the API works.
  • Usage code examples added.
  • The manual is updated, if needed.

During merge:

• [ ] Commit message for squash-merge is prefixed with one of the list:
  • NEW: ___.
  • FIX: ___.
  • DOCS: ___.
  • CHANGE: ___.
  • RELEASE: 1.1.0-preview.3.