Merge pull request #63 from abdulrauf/master

Gallery & asset improvements, bug fixes
page_options

Signed-off-by: Yuri Tománek <yuri@tomanek.com.au>
Increased the depth of the nav_tree

Signed-off-by: Yuri Tománek <yuri@tomanek.com.au>
Merge branch 'master' of https://github.com/Gluttonberg/core