CLM: Support network clusterization of the FixMontage plugin
Fiji_Archipelago: Remove unused PMAcknowledgingSender class
Archipelago: Reorganizing how ClusterNodes are handled. Does not compile.

This begins an effort to simplify Cluster.java
DummyNodeShell: a dummy shell to associate to volunteer nodes
Archipelago: Minor progress
Fiji_Archipelago: removed NodeManager from code, centralized actual management of nodes in NodeCoordinator
Fiji Archipelago: Remove unused NodeManager class
Fiji Archipelago: fixes in ui
Fiji Archipelago: Move scheduling out of Cluster and into its own class
Cluster: compiles and runs, but experiences deadlocks and doesn't quite schedule jobs on nodes
Fiji Archipelago: Bugs fixed, things work. Sometimes runnings jobs returns incorrectly
Fiji Archipelago: minor changes to assist debugging
Fiji Archipelago: volunteer nodes work again
Fixed NPE when closing just after starting, less unnecessary verbosity, better handling of auth errors