* See PyProjectSynchronizer for entry point
* DownloadAction refactored to extract  download
* VagrantSupportImpl refactored to fetch mapped folders

before attempting to load its contents

function expression searcher: find most likely files only among of files where occurrences was found. method names should be found in sam-class use-scope (follow-up 4c72b12c)

Partially reverted equals/hashCode changes.

- Refactored: EmptyIcon, LayeredIcon, RowIcon, CachedImageIcon, LazyIcon
- JBUI.scale missed LayeredIcon's

create test action: choose one of dependent modules only when exactly one exists with test root (IDEA-163111)

build scripts: use more restrictive since/until build range for non-bundled plugins (163.xxx.* instead of 163.*)