Process BPMN Import (New MS)

[jjoderis]

Summary

• Added the functionality to import processes from one or multiple BPMN files

Details

• generalized the process creation from existing data out of the process-copy-modal
• reimplemented the process-copy-modal with the new process-creation-modal
• implemented a process-import modal with the process creation modal
• added a Process Import button to the sidebar in the Process List sub-menu
• clicking the button opens a file browser that allows selecting BPMN files
• after file selection is finished the process-import-modal is opened and allows changes to some of the meta data of the imports
• increased the amount of data allowed in a request to allow import of larger BPMN files (>100kb)

[OhKai]

LGTM. In the future we should probably do the refactoring where all the process related stuff gets moved into the processes page folder.

[OhKai]

@jjoderis Please resolve the conflicts, then it can be merged.