Add function to FileUtils that encodes paths.

Use this function to properly set the source of images in ImageViewer.
fix style sheet parsing
Merge pull request #9988 from adobe/randy/issue-9875-squashed

Fix style sheet parsing
strip dirty dot from file name
Merge pull request #9190 from Mark-Simulacrum/issue-9117

Add encodeFilePath to FileUtils to convert file paths into encoded strings (replace metacharacters such as %, @, $, #, etc.)
Merge pull request #9992 from adobe/randy/9972-inlineeditor

Fix CSS Inline Edit unit tests
Explicitly set focus to search field.
Adjust the top position of Quick Open list by one pixel to avoid the obscuring of the bottom focus ring.
Focus ring Looks better with two pixels.