Bump dependencies. Some parts needed to be deactivated for that. They need to be reimplemented.

- breadcrumbs (!flask-breadcrumbs)
- manual modal button
- api blueprint (!flask-marshmallow/!marshmallow-sqlalchemy)

app/main/routes.py

@@ -1,14 +1,11 @@
 from flask import flash, redirect, render_template, url_for
-from flask_breadcrumbs import register_breadcrumb
 from flask_login import current_user, login_required, login_user
 from app.auth.forms import LoginForm
 from app.models import Corpus, User
-from sqlalchemy import or_
 from . import bp
 
 
 @bp.route('/', methods=['GET', 'POST'])
-@register_breadcrumb(bp, '.', '<i class="material-icons">home</i>')
 def index():
     form = LoginForm()
     if form.validate_on_submit():
@@ -27,7 +24,6 @@ def index():
 
 
 @bp.route('/faq')
-@register_breadcrumb(bp, '.faq', 'Frequently Asked Questions')
 def faq():
     return render_template(
         'main/faq.html.j2',
@@ -36,7 +32,6 @@ def faq():
 
 
 @bp.route('/dashboard')
-@register_breadcrumb(bp, '.dashboard', '<i class="material-icons left">dashboard</i>Dashboard')
 @login_required
 def dashboard():
     return render_template(
@@ -46,7 +41,6 @@ def dashboard():
 
 
 @bp.route('/news')
-@register_breadcrumb(bp, '.news', '<i class="material-icons left">email</i>News')
 def news():
     return render_template(
         'main/news.html.j2',
@@ -55,7 +49,6 @@ def news():
 
 
 @bp.route('/privacy_policy')
-@register_breadcrumb(bp, '.privacy_policy', 'Private statement (GDPR)')
 def privacy_policy():
     return render_template(
         'main/privacy_policy.html.j2',
@@ -64,7 +57,6 @@ def privacy_policy():
 
 
 @bp.route('/terms_of_use')
-@register_breadcrumb(bp, '.terms_of_use', 'Terms of Use')
 def terms_of_use():
     return render_template(
         'main/terms_of_use.html.j2',
@@ -73,7 +65,6 @@ def terms_of_use():
 
 
 @bp.route('/social-area')
-@register_breadcrumb(bp, '.social_area', '<i class="material-icons left">group</i>Social Area')
 @login_required
 def social_area():
     print('test')