v1.2.0 release Windows installer added

Wix files added for windows installer, build now creates an msi file
Functionality added, shows the time taken retrieving and calling a web
service
Functionality added, the user can add/remove startup wsdls from the tree
view
Bug fix, the update dialog box has been enlarged to correctly display
update message
Bug fix, request text box modified to accept tabs
Bug fix, user can now select a wsdl file from a folder with spaces
UI change, the log panel for web service calls has been moved below the
request response tabs