[#781] Begin improving IFacets docs

Better docstrings and an example extension for IFacets. Both still need
some work..
[#1251] Add resource_view table
[#1251] Add resource_view create functions
[#1251] Add resource_view_show
[#1251] Add resource_view_update
[#1251] Add resource_view_delete action function
[#1251] Add title and description to resource_view.
Change 'view_number' to 'order'.
fix merge conflicts
[#1251] updates to resource view logic, remove ordering in the api
[#1251] view reordering and config on top level
merge master fixes
[#1251] add image view
[#1301] Adds skip to content accessibility block
[#1301] Adds header label block and flash message inner
[#1301] Added a couple of template blocks to the activity_streams snippet
[#1251] add view forms
[#1301] Added template blocks to group_item.html
[#1301] Adds template blocks to package_list.html
[#1251] PEP8
[#1251] Show resource views on resource read page.
Still unstyled.