Fix bug #2910 (Find doesn't show orange highlight in inline editors) &
fix bug #2960 (Find shows wrong orange in placed if opened with selection
containing newlines)
- Strip newlines from prepopulated Find text
- Add a selector to match the specificity of the inline-editor-specific
selection color rules in brackets_codemirror_override.less
Merge pull request #3008 from adobe/pflynn/find-highlighting-fixes

Fix Find highlighting bugs