Smaller cde-fab

* Same size as other buttons in UI)
* Indirectly fixes #3642
Remove filehander::title from manifest.json
Merge pull request #3671 from sunglim/m38fix

Remove filehander::title from manifest.json
don't delete windows junction point dirs
Move in-editor FABs to bottom-right to avoid overlap with search/replace dialog
1px smaller font in spark-status to avoid overlap with New Project FAB
Merge pull request #3675 from ussuri/ui-adjustments

UI adjustments
Merge pull request #3673 from devoncarew/devoncarew_win_junction

don't delete windows junction point dirs
Renable git-salt behind a flag.
Merge pull request #3677 from dart-lang/reenable-git-salt-flag

Re-enable git-salt behind a flag.