[change] Make batch user creation organization field readonly#618

Eeshu-Yadav wants to merge 3 commits intoopenwisp:masteropenwisp/openwisp-radius:masterfrom

Eeshu-Yadav:issues/609-batch-user-org-field-readonlyEeshu-Yadav/openwisp-radius:issues/609-batch-user-org-field-readonlyCopy head branch name to clipboard