Merge branch 'v2_9_2'

Dockerfile

Dockerfile_jre

README.md

pom.xml

...in/java/de/deadlocker8/budgetmaster/accounts/Account.java

.../de/deadlocker8/budgetmaster/accounts/AccountService.java

...adlocker8/budgetmaster/categories/CategoryController.java

.../deadlocker8/budgetmaster/categories/CategoryService.java

src/main/java/de/deadlocker8/budgetmaster/charts/Chart.java

...java/de/deadlocker8/budgetmaster/charts/ChartService.java

.../deadlocker8/budgetmaster/controller/AboutController.java

...de/deadlocker8/budgetmaster/database/DatabaseService.java

...cker8/budgetmaster/database/importer/AccountImporter.java

...ker8/budgetmaster/database/importer/CategoryImporter.java

...locker8/budgetmaster/database/importer/ChartImporter.java

...dlocker8/budgetmaster/database/importer/IconImporter.java

...locker8/budgetmaster/database/importer/ImageImporter.java

...dlocker8/budgetmaster/database/importer/ItemImporter.java

...adlocker8/budgetmaster/database/importer/TagImporter.java

...budgetmaster/database/importer/TemplateGroupImporter.java