local_portgenerator.php: Compatibility with RT v.0.20.8

local_portgenerator.php:

Compatibility with RT v.0.20.8, because DB-Model was changed (RactTables Changelog: update: move port outer interfaces from the dictionary)
Port listing with InnerInterface ID (Example: 10-1588     QSFP+ => empty QSFP+)
some HTML Tags bugfixed