Add app 'gallery'

This is an image gallery that is meant for images
from for example the salon, events and such.
Add app 'gallery' to INSTALLED_APPS
Add urlpattern for app 'gallery'
Fix syntax error
Add album.css
Add urlpattern for 'album' page
Add 'vertical-align' to the '<li>'s
Add jquery.min.js
Import stylesheets and display list of albums
Add styles for the popup-view in the albums
Setup a html-layout for the album
Add javascript-functions for the slideshow-functionality
Wrap the popup-view in a container

The container has a faded background, and
contains the view with the image and
navigation
Add more styles for the popup-container
Add comments in 'gallery.js'
Add functionality for navigating using the keyboard
Add an index-div to the popup-view
This displays which image that is current shown.
E.g. 1/10.
Add styles for the index-div
Add function 'setIndex()'

This function sets the text in the index-div.
Change the name of 'gallery' to 'galleri'