loadFile(): Added option to specify url as a URLRequest.
Added option to specify requestHeaders in loadFile()
Added option to specify url request method
Moved WeaveArchive.as and related files to WeaveCore project.
Moved createWeaveFileContent() to WeaveArchive.
Added btoa() and atob() to StandardLib.
fixed bug in loadFile() request method
Added required Google Javascript File at index.template, Added support
for Google drive integration. In visapplication save to google drive
menu created based on Authorization.