Implement Flask-Breadcrumbs

app/templates/admin/user.html.j2

app/templates/admin/users.html.j2

app/templates/auth/_breadcrumbs.html.j2

app/templates/auth/login.html.j2

app/templates/auth/register.html.j2

app/templates/auth/reset_password.html.j2

app/templates/auth/reset_password_request.html.j2

app/templates/auth/unconfirmed.html.j2

app/templates/contributions/_breadcrumbs.html.j2

app/templates/contributions/contributions.html.j2

...tes/contributions/create_spacy_nlp_pipeline_model.html.j2

...contributions/create_tesseract_ocr_pipeline_model.html.j2

app/templates/contributions/spacy_nlp_pipeline_model.html.j2

...templates/contributions/spacy_nlp_pipeline_models.html.j2

...plates/contributions/tesseract_ocr_pipeline_model.html.j2

...lates/contributions/tesseract_ocr_pipeline_models.html.j2

app/templates/corpora/_breadcrumbs.html.j2

app/templates/corpora/corpus.html.j2

app/templates/corpora/create_corpus.html.j2

app/templates/corpora/files/corpus_file.html.j2