omero: Python 2.6 is the minimum supported version
Fix broken webmobile repository URL
Define Spring hyperlink and extlink for Spring doc in OMERO conf.py

- Use new Spring URLs (http://spring.io and http://docs.spring.io)
- Update all links to Spring main page/documentation in the developers page
Use webtagging repository as the application example
Merge pull request #494 from sbesson/rebased/develop/spring_redirect

Define Spring hyperlink and extlink for Spring doc in OMERO conf.py (rebased onto develop)
Merge pull request #493 from sbesson/rebased/develop/webmobile_link

Fix broken webmobile repository URL (rebased onto develop)
Rescaling images in script docs
Database backup warning
Merge pull request #498 from hflynn/rebased/develop/script_image

Script docs image rescaling (rebased onto develop)
Merge pull request #499 from hflynn/11093-develop

Database backup warning
Resizing images for pdf only
Merge pull request #501 from hflynn/rebased/develop/pdf-images

Pdf images resizing (rebased onto develop)
Add/remove missing/incorrect Annotation types
Fix formatting and typos in existing doc
Add missing close parenthesis
Corrected StructuredAnnotations hierarchy
Add seealso markup linking to the SA generated schema documentation
Reference latest schema 2013-06
Added MapAnnotation

See https://github.com/openmicroscopy/ome-documentation/pull/496#issuecomment-25439727
Update sample script example