month report improvements

[deadlocker8]

• [x] localize "No category" and "month"
• [x] show budget sums next to each other instead of new lines (saves space)
• [ ] cellpadding top and bottom
• [x] spacing:
  • [x] headline to top is too large
  • [x] spacing between headline and transactions table is too large
• [x] transactions table sums should be bold
• [ ] better break behavior of category consumption table
• [x] short date
• [ ] don't break words at unusual positions
• [x] right align amount

[deadlocker8]

https://medium.com/@isurunuwanthilaka/jasper-reporting-java-d6764cfa8e42 https://www.stackextend.com/java/generate-pdf-document-using-jasperreports-and-spring-boot/ https://github.com/mouadelfakir/jasperreports-pdf-generation-example