IDEA-114955 Cosmetic code style changes
IDEA-114955 Display an error message when invalid regex is entered
IDEA-114955 Show red background in the search box if it doesn't match any commits or if regex is invalid
Github: add current branch to dialog title
Github: do not spin busy on fetch error
Github: clean
Github: use FutureTask instead of FutureResult

* do not showErrorDialog from Modal thread
Github: check DiffInfo before performing request

* do not allow to create empty PR
* ask if base branch is not fully merged
IDEA-114955 Use existing helper method to get the default background color instead of storing it in a field.
First version of self-signed certificates support for task subsystem
Add several improvements in certificate manager
Add highlighting restart after successful test connection in YouTrackRepositoryEditor
remote servers: extracted api for downloading client libraries
IDEA-115359 Gradle: generate apply plugin dsl code with alt-insert
selection after methods chains completion and checking parameters in context
selection after methods chains completion fixed and chain relevance improved
External system: debug info added for orphan modules processing
getter for provider
fix directory search
Merge branch 'svn-history-regex-filter' of https://github.com/pkrcah/intellij-community

Pull request https://github.com/JetBrains/intellij-community/pull/109