[datafeed] add a timeout config option (closes #2745677) So a HTTP GET do not hang forever in the datafeed looping task.

[dataimport] ucsvreader should skip empty lines unless specified otherwise. Closes #3035944

[querier] Add timings to debug prints (DBG_RQL) this may ease to spot some problematic queries

[editcontrollers] Ensure entities are created in an order satisfying schema constraints. Closes #3031719 changes below are also necessary to make the whole thing works: * stop considering InlinedFormFile as eidparam field since they don't hold any value * rework 'pendingfields' handling to have separate processing of inlined fields whose subject entity is created during the edition

[editcontroller] extract RQLQuery.set_attribute/set_inlined methods from handle_field/handle_inlined_relation

[editcontroller] req=self._cw makes things easier to read

[facets,js] fix bogus checkbox icon appearing after the first interaction (closes #2790332) This is because of the hardcoding of the data/ url.

fix typos in docstring, doc and comments

[debian] remove workaround for broken sphinx/jquery combination sphinx in squeeze was updated: http://packages.qa.debian.org/s/sphinx/news/20130112T154737Z.html

[schema] mark CWDataImport as an internal type. Closes #3025536