Adds a gitkeep for datasave

o The datasave folder can serve to store your primary research data.
  This data usually should be saved somewhere save and untouched.
Restructuring

o Renames several folders and introduces a new structure to the
  subdocument folder in the usr space (also reflecte in the exmaple
  and temp content in the osp space)
o Better integration of the ProjectTemplate
o Adapts the makefile to new folder structure
o Introduces the datasave folder for original research data storage
o rproject is now empty and will be filled via ProjektTemplate via
  maketask
Some adds

o Latest pdf
o Folders for chunks in osp space
o Folder for chunks in usr space