Resolve "Implement ProgressBar"

Closes #27 (closed), #41 (closed), #42 (closed)

changed milestone to %Sprint #5 SM: Lukas Horn

added Doing gui labels

added 41 commits

• 7c34a2f3...bd967982 - 41 commits from branch master

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added 1 commit

• 781a5e03 - implemented progress bar

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added 1 commit

• 29bd9ebd - made upload running asynchronous

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changed the description

added 1 commit

• c7c738b9 - blablabla

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added 3 commits

• c7c738b9...684a38fe - 2 commits from branch master
• 26723b24 - merge

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added 1 commit

• c487139b - added comments

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added 1 commit

• 4bb0ad9c - implemented tests for all commands

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added 7 commits

• 4bb0ad9c...b9fa31de - 4 commits from branch master
• 6faab0bc - Merge remote-tracking branch 'origin/master' into 27-implement-progressbar
• 8ec86808 - Merge remote-tracking branch 'origin/master' into 27-implement-progressbar
• 170f2303 - removed print statements

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marked this merge request as ready

requested review from @s390590

assigned to @s390830