[Tizen] Parsing of app-control entry in widget manifest

In xml manifest, we have following structure of app-control entry:
<tizen:app-control>
    <tizen:src name="edit.html"/>
    <tizen:operation name="http://tizen.org/appcontrol/operation/edit"/>
    <tizen:mime name="image/jpg" />
    <tizen:uri name=""/>
</tizen:app-control>

Information about app-control should be passed to platform's manifest.xml
during installation of widget.

This information enables launching applications based on app control as
handler for given URI or MIME type.
Merge pull request #2592 from tiwanek/XWALK-1490

[Tizen] Parsing of app-control entry in widget manifest