Bind "webkit_web_view_download_uri"
Add binding for WebKitURIResponse
download: add slot for the download uri-response
Initial binding for WebKitWebResource
web-view: binding for "webkit_web_view_get_main_resource"
web-view: bind WebKitWebViewMode enum
web-view: add view-mode slot
Merge branch 'download'
Merge branch 'view-mode'
Merge branch 'web-resource'

Conflicts:
	webkit2/webkit2.web-view.lisp
web-view: export enum types