ENG-4494: First stab at making @UpdateApplicationCatalog pro.
Not all error paths work well yet.
Tests only partly purged so far.
ENG-4494: Fix the 6 failing community tests by moving some to pro and by making some condition on enterprise edition.
ENG-4494: Community edition gives friendlier error on UAC call.
Provisional text waiting for ajgent's update.
ENG-4494: Updating missing-UAC error with text from Andrew.
ENG-4494: Fix broken test.
Merge pull request #427 from VoltDB/ENG-4494-catalogupdatesarepro

Eng 4494: Make UpdateApplicationCatalog a pro feature