First of two fixes for bug #5726: hide nominate for deletion when logged out #5773
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Fixes #5726
What changes did you make and why?
Added more if statements into "onDeletionPageExists" function so that guest users won't have the capability to nominate an image for deletion.
Tests performed (required)
Manually tested by compiling and running the app (As guest and logged in)
I also ran the UnitTests in which all of them passed
Tested {build variant, e.g. ProdDebug} on {What Emulator used} with API level {Level}.
Screenshots (for UI changes only)

When the user isn't logged in
When the user is logged in

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