Move OMERO table of contents sidebar to omero/themes/
Move OMERO specific extlink (source, jenkins) to omero/conf.py
Add Github and Jenkins extlinks to the Model documentation

Fix source code and javadoc links in the formats pages
Ignore .pyc file generated during the import of common/conf.py
merge dev_4_4 -D org -I include -E exclude: PR 334 (Add GH/Jenkins extlinks to the model documentation)