Merge branch 'v2_7_0'

Dockerfile

README.md

build/screenshots/dark/accounts.png

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build/screenshots/dark/home.png

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build/screenshots/dark/new_category.png

build/screenshots/dark/new_normal_transaction.png

build/screenshots/dark/new_transaction_1.png

build/screenshots/dark/new_transaction_2.png

build/screenshots/dark/new_transfer_transaction.png

build/screenshots/dark/reports.png

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