svn: Refactored SvnFileSystemListenerWrapper - code simplified
svn: Refactored SvnFileSystemListener - removed unused code, code simplified, warnings fixed
svn: Removed SvnFileSystemListenerWrapper - corresponding logic moved to SvnFileSystemListener
svn: Use common "Jump to Source" action (instead of custom "Open" action) to open files from repository browser
updated ipython notebook format to work with nbformat == 4
IDEA-104113 Disable SelectInAction action for svn repository browser - provide custom Navigatable instance (instead of OpenFileDescriptor instance)
support TabbedContent: ability to group a few tool window contents into groups
special tool window tab UI for tabbed content
use TabbedContentLabel for TabbedContent
make VCS History use TabbedContent
[log] IDEA-107117 Fix disappearing filter components

Per nature of CustomComponentAction, don't store the state in the
components itself.
Instead store current filter state in the main ClassicFilterUi class,
providing FilterModel classes to let components get and set
filters' values.
move java logic to python side
load meta data for array in first request
[log] IDEA-115897 clear text filter on removing the text
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'
add ability to switch between content tabs via popup
change component in toolwindow tab on selectTab
Merge remote-tracking branch 'origin/master'
IDEA-112485 Shortcut to maximize toolwindow
EA-39459 - allow safe access to folding model's cached data from non-EDT threads (used by EditFoldingOptionsAction)