Adjust icon size per UI team request
Normalizing SVG formatting
Remove unused image
Resize buttons in tabs, 'Search' and 'Goto line' per UI team request
Move project/folder disclose triangles 1px higher
Revert close button size for tabs to 18px: 24px seemed excessive
Merge remote-tracking branch 'upstream/master' into svg-icons-3
Fix build not returning when cloning a dart repo.
Fix class members in Outline

Class members were displayed as top-level items (not indented and not highlighted when the class was hovered over).

This also further streamlines the relationship between the items-to-scroll-to vs. items-to-add-to-top-level-list hierarchies.
Fix highliting of classes in outline + clean up outline CSS
Merge remote-tracking branch 'upstream/master' into resizable-outline-and-better-button

Conflicts:
	ide/app/lib/outline.dart
	ide/app/spark_polymer.css
Restore dark scrollbar in outline
Merge pull request #2619 from ussuri/dark-scrollbar-in-outline

Restore dark scrollbar in outline
Synchronize styling of outline toggle button with the rest
fix an issue with refreshing resources
review changes
Merge pull request #2624 from devoncarew/devoncarew_fix_refresh

fix an issue with refreshing resources
added comment.
Merge pull request #2616 from dart-lang/fix_build_on_dart_clone

Fix build not returning when cloning a dart repo.
Restore returns for outline items created by _create* and _add* methods