BK-1110 Group owner should be able to add his books to the group
BK-1054 Remove old booki portal application
BK-1055 Remove old booki reader application
Merge branch '2.0' of https://github.com/sourcefabric/Booktype into 2.0
BK-1118 Add auto-join group on Create New Group functionality
Merge branch 'BK1055' into 2.0

Conflicts:
	lib/booki/portal/templates/bookiportal/frontpage.html
	lib/booki/reader/urls.py
	lib/booktype/skeleton/base_settings.py.original
Merge branch 'BK1118' into 2.0
BK-1120 Booktype core application should host robots.txt file
BK-1120 Booktype core application should host robots.txt file
BK-1122 Wrong links since removing the old reader app
BK-1099 Transfer template tags to core application
BK-1040 Instead of error message exception is thrown when editing non existing book
BK-1050 Define default error (404, 500, ...) pages
BK-1148 Create new admin control center dashboard
Merge branch '2.0' of https://github.com/sourcefabric/Booktype into 2.0
Merge branch 'BK1148' into 2.0
BK-1048 Move pages module to new booktype application
Fix executable bit on cron scripts