fix: remove mongo - no need

docker-compose.yaml

src/frontend/grammar-manager-app/public/manifest.json

.../jakubu9333/grammarManager/dao/FileContentRepository.java

...java/com/jakubu9333/grammarManager/model/FileContent.java

...ava/com/jakubu9333/grammarManager/model/FileMetadata.java

...ain/java/com/jakubu9333/grammarManager/model/Grammar.java

...va/com/jakubu9333/grammarManager/model/RightSidePart.java

src/main/java/com/jakubu9333/grammarManager/model/Rule.java

...va/com/jakubu9333/grammarManager/service/FileService.java

...com/jakubu9333/grammarManager/service/GrammarService.java

...ava/com/jakubu9333/grammarManager/GrammarServiceTest.java

startscripts/create-user.sh