initialState improvements; Extend Alerts, Validity, Coping with pathological cases

Priority projects:

• In initialState, reduce validity range to engineering realistic values (#773, #876)
• In initialState, prune unused properties (#856)
• Add displayname to entries in symboltable (#896)
• Add Search/Seek warning(s) about invalid starting point (#705)

Bug fixes:

• Change Heat_Treat from String to Number in Torsion initialState and initialState_metric_units (#878)

Other stuff

• Enhancements
• Documentation updates
• Update Message Of The Day