Multiple improvements and organization

Various improvements to Numbers class code.
Completed missing XML documentation.
Fixed "two-in-one" string variables from NumberWriteInfo class.
Deleted obsolete LogEventArgs class.
LogTransaction class changed to set event ID and type before commit.
Improved the locking management of LockedMultiAccess class.
Changed Commit method from ITransaction to parameter-less.
Obsoleted Telephone and Telephones classes.
Renamed WriteNumber to SpeltNumber.
Moved IMaskeable and Telephone to Formatting namespace.
Moved GrammarNumberWriteInfo to Globalization namespace.
Moved LockedMultiAccess to Threading namespace.
Added unit test to Numbers class.