Merge remote-tracking branch 'origin/master'

Included support for other Intellij platform IDEs.

Create LICENSE

Create README.md

Changed description (turns out that Tortoise products always clear commit message when commit window is opened). Also updated description.

Potential fix for situations when action is created before the component, changed since build in plugin settings (now since 2016.1).

Plugin info added.

Toggle action implemented as a proper toggle, Observer pattern for observing state change in DeleteMessageSettingsComponent, text and description change, CVS -> VCS typo correction.

Clear last commit message on successful commit now a global feature, not project-specific.

First working version

Initial commit