Be a bit more consistent about how we raise permission denied
Break out sidebars into their own templates
Add a note about some placeholder text
Separate album thumbnails to their own template
Use django-bootstrap3 for bootstrap icons in a few places
Make the invite screen a little prettier
Splitting up the forms module
Remove unused imports
Remove duplicate assertion
Check the behaviour of sending invitations when none are left
Add a note about improved invitation handling
First pass at friend requests implementation

Not terribly featureful - there's no way to see a friend's
photos/albums unless you know the URL, and the template
isn't at all customised, so you end up with all the buttons
like delete that won't work, because you're not allowed to
do that.
Add a few models to the admin
Removing the sample members' page, since it now has no un-implemented ideas
Hide write controls on album detail page when viewing as friend
Remove photo controls on images when you're logged in as a friend
Remove a horizontal rule to mask float issues