Add support for adding Java event handlers to JavaScript in the WebView based brower component

SOAP-2329
Use install4j signing instead of signtool for windows
Use install4j signing instead of signtool for windows
Merge pull request #84 from SmartBear/call-java-from-javascript-soap-2329

Add support for adding Java event handlers to JavaScript in the WebView based browser component
SOAP-2217
* Refactored the WsdlProject class to allow creation of a project from an input stream. This had some ripple effects that required other refactoring, which is now handled.
* Added CreateDataDrivenTestAction for creating a new project using a
* template file.
* Improved some naming
SOAP-2217
* Refactored encryption field. It used to be an int (three-state flag), and is now an enum.
* When a project import fails due to not being able to load the project configuration, SoapUI will no longer try to fall back and create a default configuration. Instead, an error message will be displayed to the user, asking them to verify that the file they're trying to import is an actual SoapUI project file.
SOAP-2217 - Finishing touches
* Fixed bug caused by encryptionStatus not being initialized to a default value
* Changed some potentially dangerous (possibly unintentional) bitwise operations to logical operations (& to &&)
* Removed unused/debug code.
SOAP-2217
The starter page now has a button for creating a data driven test project from a template file. It works!
* Added a dummy starter page for experimentation
* SoapUI Pro now has its own starter page (URLDesktopPanelPro) and corresponding methods
* Some name refactoring