Add requests

login.sh

logout.sh

requests/GET_status.sh

requests/POST_add-items-metadata.sh

requests/POST_new-collections.sh

requests/POST_new-communities.sh

requests/POST_new-items.sh

requests/POST_new-subcommunities.sh

requests/PUT_edit-bitstreams.sh

requests/PUT_edit-collections.sh

requests/PUT_edit-communities.sh

requests/PUT_edit-items.sh

requests/UPLOAD_edit-bitstreams.sh

requests/UPLOAD_new-bitstreams.sh

requests/files/DSpaceREST_index.html

requests/files/pdf1.pdf

send_file.sh

send_request.sh

test_all_requests.sh