Clean up terminology

[xendk]

We don't want the features situation where we have "feature components" and "feature sources" and code that unclear on what's it's referring to.... Starting point:

• Difference
  • One change of a config item.
• Changeset
  • A set of Differences.
  • Has a parent changeset.
  • Has an identifier (should it be renamed to SHA?).
• Snapshot (doesn't exist as an object, yet).
  • Contains a changeset
  • Possibly a full dump.
  • Date, maybe comment.
  • Should rename id and parent to changeset_id/parent, to avoid misunderstanding.
• SnapshotController
  • Keeps track of snapshots.

Needs work:

• SnapshotInterface
  • Not really an interface to snapshot.
• ArraySnapshot
  • Something different from the snapshots managed by the controller.
• Config
  • Bit too general a name.

SnapshotInterface -> ConfigInterface ArraySnapshot -> ConfigArray Config -> ConfigDrupalConfig (must avoid confusion with the DrupalConfig class). perhaps?

And everything should be namespaced or prefixed.

[xendk]

New Snapshot class implemented.

[xendk]

SnapshotInterface -> ConfigInterface ArraySnapshot -> ConfigArray Config -> ConfigDrupalConfig done...

Left: Namespacing Changeset->identifier -> Changeset->sha

[xendk]

Renaming done.

All that's left is the namespacing.

[xendk]

Namespacing done.