[cdash] move to own site (crash.0xdeadbabe.info)
updated "contributing" doc
Undone findEntities and reintroduced "findSections" & "findSources" instead
Implemented use of "getEntities" in last missing instance, i.e. "EntityWithSources".
Also: added "getSource(size_t index)" to "IEntityWithSources" to require all derived classes to implement it for use with "getEntities".
Removed the "children" methods in "Sections" & "Sources" that had been added when implementing (the now also removed) "findEntities"
quick fix "children() = source()"
quick fix "children() = sections()"
Update Source.cpp
Implemented "method(const none_t t)" for all according attributes in "NamedEntity"
Implemented "method(const none_t t)" pattern for all instances in "NamedEntity" & "EntityWithMetadata"
Merge branch 'master' of github.com:/balint42/pandora
Merge branch 'master' of https://github.com/G-Node/pandora

Conflicts:
	include/nix/base/INamedEntity.hpp
	include/nix/base/NamedEntity.hpp
	include/nix/hdf5/NamedEntityHDF5.hpp