sent but not implemented in Seaside 3.1.3

[dalehenrich]

gsUpdater tests reveal sent but not implemented messages:

• 'Sent but not implemented: #''addDeferredStartupAction:'''
• 'Sent but not implemented: #''getPng:'''
• 'Sent but not implemented: #''getGif:'''

[dalehenrich]

Here's the load script:

Gofer new
  package: 'GsUpgrader-Core';
  repository: (MCDirectoryRepository new 
                 directory: (ServerFileDirectory on: '${BASE}/monticello'));
  load.
(Smalltalk at: #GsUpgrader) upgradeGrease.
GsDeployer deploy: [
  Metacello new
    baseline: 'Seaside3';
    repository: 'github://GsDevKit/Seaside31:v3.1.3-gs/repository';
    onLock: [:ex | ex honor];
    load: #('CI') ].

[jbrichau]

They're actually sent by Zinc. I moved the issue over there