NXP-11517: More precise comment about pending pair states ordering
Update link to QT binaries
Simplified README.rst and updated PySide instructions

- Moved the developer doc in a separate file
- Updated PySide build instructions for homebrew users
Some more dev doc improvements
cosmit in dev doc
NXP-11395: install faulthandler to get a Python traceback in case of segfault
Add note to install faulthandler under windows
NXP-11542: Don't include non adaptable documents when fetching a folder's children (ie. avoid null elements in list)
NXP-11371: Typo (was working because false is the default value for the grant attribute)
NXP-11552: document known QT portability issue under OSX
NXP-11520: Don't fetch binary installers in nuxeo-drive-jsf build + make their download point to the 'client' directory of the server
NXP-11382: Add link to the documentation about Linux client in Home > Nuxeo Drive
NXP-11569: Always commit or rollback started transactions in tests
Format
NXP-10080: Follow RestFeature refactoring in Drive tests
NXP-11515: Test non null fileSystemItem attribute in the FileSystemItemChange for an unregistered sync root that can be adapted
Cosmit
NXP-11571: Check WriteProperties permission when registering or unregistering a synchronization root
NXP-11567: Handle non adaptable parent document + test rootless items
NXP-11571: Format