Start Volley request support for ModArchive API

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Parse modarchive result xml

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Display random pick search result

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>