Perf/named collection simplify

• CRITICAL: TubVal.loadfromJSON - prevent returning of pointer to stack variable for topmost call in recursion
• NamedCollection (TubList) use now use objectList as internal storage instead of StringList. Names are stored inside TubVal (this prevent duplicate names storing)
• Models collection now case sensitive
• remove JSONBuffer variable form TubNamedCollection (not required since all str values are copied to strings during serialization)
• TubSQLBuilder.LoadFromList now O(n) instead O(n*2)
• TubVal: speed-up a little integer/decimal/boolean values parse