removing dynamic:true from _attachments

otherwise it would have destroyed our indices...again.
merge with master and resolve conflicts
move export and manage data under data tab, users is just users tab
pep8
data tab is ready
merge master and resolve submodule conflicts with hqstyle and payments
split commtrack management stuff into data tab
created export app, and moved custom_export_helpers into it
Merge pull request #928 from dimagi/no_dynamic_attachments

removing dynamic:true from _attachments
update submodules
set width to pixel value to get around nvd3 bug
Merge pull request #952 from dimagi/orgs

get around bug in nvd3
move create custom export views into data tab
don't get name confused with url name and page name. being explicit.
fix bug where width got set to 0 when loading the page with a report that isn't the default
Merge pull request #953 from dimagi/orgs

fix bug where width got set to 0 when loading the page with a report tha...
forgot to move some groups views over to the view class setup
final responses to UAT feedback
Merge branch 'master' of github.com:/dimagi/commcare-hq into settings-users-split
merge with settings-users-split and update submodule refs to hqstyle and payments