user welcome emails
fix typos
fix typos
more edits
cleanup imports
pagers - raise 404 when page is empty
fix potentially unassigned variable
add ext links facilities and some tests, refs #888
add wikilink to rating tools, refs #867
update text welcome message
use account app settings to address #881
basic customization 401 tmpl, refs #891
follow up to 849f43f1, refs #881

make sure email account activation required to register
flagging improvements, refs #829 and #830

requires forked django-flag app to handle status on FlagInstance
and some admin interface
initial manual content for annotations csv upload

refs #874
flagging widget adjustments

- remove inappropriate option
- add placeholder text
- hide widget unless authenticated
switch wiki links to template tags
Merge pull request #893 from drwelby/wikilinks

switch wiki links to template tags
test emails
finish merge