progress bar dispalys numbers now, trophy beside progress bar to see what kind of challenge the user is doing, reordered tropies, added disclaimer if no trophy has been achieved or if all trophies have been achieved, improved sql query to get both results at once, improved layout

gitsearchApp to gitSearchV2App :-(

This makes displaying metadata of an exercise
less verbose. Styling is a bit lacking as of now.

Restructure metadata translations of lists
to make declarations more concise.

added GitlabService.java to offer basic gitlab api functionalities like check if repo exists etc. , added check in StatisticsResource to avoid people sending get requests with IDs which not exist and therefore create lots of trash entities