Using util_install_signals().
Added util_abort() guard on type of config_data in block_obs_alloc_complete().
Added size() function to enkf_plot_blockvector.
Removed stale comment.
Updated test: block_obs requires valid config input.
Renamed function enkf_config_node_new_field() -> enkf_config_node_alloc_field().
Fixed bug in gen_obs_measure with localisation; wrong index was picked when measuring.
Renamed enkf_node_alloc_container -> enkf_node_alloc_shared_container.
Added enkf_node_alloc_shared_container() and enkf_node_alloc_private_container()
Added block_obs_iget_data() + using enkf_node_alloc_private_container().
Added empty enkf_config_node test file.
Massive commit: changed enkkf_plot_blockxxxx to take an obs_vector instance as constructor argument.