Add django-import-export and dependencies.
Add django-import-export support to admin panel.
Merge pull request #936 from glogiotatidis/importexport

Add django import-export.
[fix bug 1007567] Reset vouch metadata when is_vouched=False.
Merge pull request #943 from glogiotatidis/1007567

[fix bug 1007567] Reset vouch metadata when is_vouched=False.
[Fix bug 1005221] restored z-index
Merge pull request #945 from caktus/1005221-ios-tooltip

[Fix bug 1005221] restored z-index
[fix bug 1000923] Link External Accounts which are urls.
Fix bug 949732 Added database dump import instructions.
Merge pull request #947 from chefscott/docs_mysql_update

Fix bug 949732 Added database dump import instructions.
[fix bug 991556] Group members are not sorted alphabetically