Hipparcos-DB 0.5.5.24

• code cleaning und bugfixing
• enabled new GUI theme

What's Changed

• Add files via upload by @mjohne in #3
• Add files via upload by @mjohne in #2
• Add files via upload by @mjohne in #5
• Add files via upload by @mjohne in #4
• Add files via upload by @mjohne in #6
• Add files via upload by @mjohne in #7
• Add files via upload by @mjohne in #8
• Update LICENSE by @mjohne in #9
• Add files via upload by @mjohne in #10

Full Changelog: 0.5.4.23...0.5.5.24