It's description refer to actual host instead of 'JetBrain Web site', $VERSION placeholder is supported in feedback URLs, action is hidden for OSes which don't have official distributions. This is needed to reuse the action in Android Studio instead of overriding it (IDEA-209167).

IDEA-209201 [JDK 11] Empty autocomplete popup in run configuration after backspacing some part of filename

On startup, the log at first loads only 1000 latest commits, and the permanent graph is not ready to walked by some older nodes. In this case let the VcsLogProvider handle the filtering request completely.

Previously, if there was a programmer error or a constant issue in the refreshing or filtering code, the exception was logged, but the task was restarted again and again, continuously failing with the same exception and polluting the log.

Disable by default under a registry option, because this UI misses several features available in the current UI.

The range filter displays only commits which are both descendants of ref1 and ancestors of ref2.

With a proper UI such a filter can be useful for:
* comparing two branches in a log tab (IDEA-207634),
* displaying commits exclusive for a branch (IDEA-126079),
* displaying a fixed set of commits between two points (IDEA-52643, IDEA-168060)

The new range filter is defined in the same branch selector popup using the syntax of Git: `..`

Commits from range filter are collected by walking up & down the graph. The Filterer first collects the commits from the range filters, and afterwards filters them by details filters (if any).

To be able to compare two MockVirtualFiles defined by the same path.

Hardcode the branch filters instead of using the FilterPair.
This is needed because in an upcoming commit there will be three filters for branches, and performing this refactoring in a separate commit

It is going to hold more model structures in an upcoming commit.

no need to postpone logger initialization, no need to use reflection to create a new instance of logger factory

First implementation

Remove unneeded Project and Module tabs in DataGrip,
and also make "All Places" the default target scope.

Canceller stopped being initialized on myCancelOnWindow.
This also fixes Switcher vs numbered Bookmark problem
where Switcher does not go away when editor is activated.

[vcs-log] introduce special interface for creating diff preview in order to remove dependency on log ui

[vcs-log] extract ShowPreviewEditorAction to the separate file, register it in xml and add to changes browser toolbar

Introduce data key for creating DiffRequestProcessor. This allows to remove explicit dependency on VcsLogChangeProcessor in MyDiffVirtualFile. After this there is no need in using VcsLogChangesBrowser specifically as the owner of the virtual file. It's better to use VcsLogUi instead, since it is also available in file history.

MyDiffVirtualFile only needs project and changes browser, not the whole frame.