Merge branch 'feature/110-inserting-magick-numbers-into-configus' into develop

* feature/110-inserting-magick-numbers-into-configus:
  deleted configus from application rb and placed a correct path into development rb enviroment
  moved configus file into initializers
  moving magick numbers into configus
added csv to application file
added self method to_csv in model and added it into admin controller
merge commit, applied both my changes in view study request
add export to csv
added xlsx to api file
deleted api controller
moved xlsx view to api admin
deleted study requests view
added view file
deleted view xlsx
test commit
test commit
test commit
test comit
test commit
added view for xlsx
deleted test file
added view file
added export to xlsx