Removed hand pointer for no-hover class

https://bugzilla.redhat.com/show_bug.cgi?id=1142401
Storage view rewritten to HAML

The obsolete _details.html.erb was removed.
Deleted obsolete cim_base_storage_extent view
Dont redraw the whole tree when checkbox was checked/unchecked

This was causing delays and was resulting in saving incorrect data when checking/unchecking lots of nodes in the tree very fast.  We dont need to redraw the whole tree to change the text color of checked/unchecked nodes and it's children in the tree to show user the changes in the tree. Fixed to only render the node that was checked/unchecked and it's children to show differences in blue color.

https://bugzilla.redhat.com/show_bug.cgi?id=1153047
https://bugzilla.redhat.com/show_bug.cgi?id=1145799
Merge pull request #795 from skateman/view-cim_base_storage_extent-to-haml

Deleted obsolete cim_base_storage_extent view
Merge pull request #781 from skateman/view-storage-to-haml

Storage view rewritten to HAML
Merge pull request #822 from epwinchell/vm_disk_styling_fix

Removed hand pointer for no-hover class
Merge pull request #852 from h-kataria/dont_redraw_dynatree_when_changing_node_text_color

Dont redraw the whole tree when checkbox was checked/unchecked