Name changes in Butterfly

[claws99]

Pull request opened at #486

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The current (until 2.00 beta 6)

• Hand to be renamed to Select
• Painters will be renamed to Tools
• Export>Document instead of Export>Data
• Packs to something else
• Label to Text
• Move to Hand

[CodeDoctorDE]

• Rename BoxBackground to PatternBackground
• Rename TextElement to RichTextElement

[CodeDoctorDE]

Hi, I wouldn't call the label tool text tool.
In the code the label tool can create markdown and text elements which conflicts with the name.
Do you remember which name we agreed on for packs?

[CodeDoctorDE]

File version was bumped to 10