Removed obsolete feature "Transfer TB-Tracking Number to Log-Field"
Merge pull request #50 from rattenburg/TransferTbTrackingNumber

- Removed obsolete feature "Transfer TB-Tracking Number to Log-Field" - gc.com implemented it
- Fix: Link to geocaching maps from Google maps missing (new google maps design) (closes #51)
- Fix: Firefox got very slow in some setups - changed the way the settings are saved (closes #39)
- Fix: Hide Header in gc.com maps was not working correctly
Merge branch 'master' of https://github.com/amshove/GC_little_helper