[#5,data][m]: first pass on script to generate Index data from Survey.

* questions, datasets, places done from source with some cleanup but no computation
* am not copying across entries yet (as large and should probably be sorted)
Fix bug in configuration of SITEURL
No need to commit output to master (or develop) branches.
Update .gitignore
Merge branch 'master' of github.com:okfn/opendataindex