previewer: PDFtk previewer

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
annotations: initial commit

* Allow annotating any page.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
annotations: file attachments skeleton

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
annotations: record notes

* Add infrastructure for adding targeted notes on records (e.g., on pages,
figures).

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
comments: notes integration

* Allow adding record notes (from annotations module) via plain comments.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
annotations: JSON-LD publishing

* Add JSON-LD publishing utilities for annotations and RESTful API helpers.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
base: demosite populate bibupload task removal

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
annotations: Gravatar fix

* Fix also in messages module.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
accounts: disable local login

* Set CFG_DISABLE_LOCAL_LOGIN.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
installation: pyld Python <=2.6

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>