feat(export): elements download (MIN-157)
Added the possibility to download data from elements from the export tab. We send the items selected by the user to the backend and the backend returns the text to be saved in a file. The data is saved in a .csv file An improvement reported by Marek regarding removing types and columns sections, displaying only available annotations and removing special characters from their names has also been added.
Edited by mateusz-winiarczyk