Updates from Maddavo.
Merge pull request #1 from tajtiattila/master

replace boolean "unknown" values with null
Verified most unverified beta 2 systems.
First commit
Further system updates
Merge pull request #2 from Harbinger73/master

Update systems.json
Verified remaining crowd-sourced beta 2 systems.
Some further updates
Merge pull request #3 from Harbinger73/master

Some further updates
Merge pull request #1 from SteveHodge/master

merge #1
Further systems updates
One final update for today
Merge pull request #4 from Harbinger73/master

Further systems updates
30 new systems
Merge pull request #5 from Harbinger73/master

30 new systems
Further system updates

- Fix wrongly named station
- 20 new systems
Merge pull request #6 from Harbinger73/master

Further system updates
More system updates

- 20 new star systems
Merge pull request #7 from Harbinger73/master

More system updates
Added 9 systems