Elgg/Elgg — pull request #6705 by juho-jaakkola (2014-04-11 10:18:53+00:00)
Title: WIP: Generic XHR upgrade features

I'm working on reusable upgrade features that include:
- generic upgrade process view
- generic upgrade javascript

I'm testing this PR on two different servers and with two different production databases and dataroots that I revert after each test. So don't worry about the hands-on testing, it's been covered pretty well.

Feedback about the technical implementation would however be welcome!