Merge pull request #702 from NicoleRauch/master

Aggregated T-Shirt sizes
dashboard now distributing groups vertically and quite evenly in height
Merge pull request #703 from leider/master

dashboard now distributing groups vertically and quite evenly in height
changing the algorithm to calculate the display height
updated dependencies
Merge pull request #704 from leider/master

updated dependencies
No automatic retry -> only simple stubbing of the load operation is required.