Merge pull request #3 from igor-borisov/master

fetching releases list, rollback feature
Merge pull request #4 from igor-borisov/master

Use release date to order versions list
Merge pull request #5 from igor-borisov/master

Use system file separator for paths
Merge pull request #6 from igor-borisov/master

Determine Vaadin 6.* version,  fix "Upgrade" link, filter early Vaadin releases (they have differen filenames and structure))
Merge pull request #7 from igor-borisov/master

VAADINPNL-37 VCP should determine Vaadin 6.* version
Updated pom.xml parent arcusys-oss-project to version 13.3.1, added
license information and custom configuration for license-maven-plugin
Changed portlet name to "Vaadin Configuration"
Minor edits, formatting
Removed unused class ControlPanelUIProvider
Added license boilerplates to source files
Updated bootstrap/arcusys-oss-project version to 13.3.1
Added bootstrap-settings.xml for an alternative way of bootstrapping OSS
repos.
Added missing repository/url element!
Merge pull request #9 from mtaivai/master

Portlet name changed, added license boilerplates, minor formatting improvements, build script improvements
Merge branch 'master' of https://github.com/arcusys/liferay-vaadin-plugin

Conflicts:
	src/main/java/com/arcusys/liferay/vaadinplugin/NewestVaadinVersion.java
changes after merging
Add license info
license info
VAADINPNL-41  Add portlet used vaadin 7 detection.
VAADINPNL-41 Add portlet using vaadin 7 detection.