config: disables sqlalchemy pane of flask-debugtoolbar for mysql

* sqlalchemy pane cannot handle UUID in bytes format
  pallets-eco/flask-debugtoolbar#112

  Closes inveniosoftware#184

{{cookiecutter.project_shortname}}/{{cookiecutter.package_name}}/config.py

@@ -113,6 +113,19 @@ def _(x):
 {%- elif cookiecutter.database == 'mysql'%}
 SQLALCHEMY_DATABASE_URI = \
     'mysql+pymysql://{{cookiecutter.project_shortname}}:{{cookiecutter.project_shortname}}@localhost/{{cookiecutter.project_shortname}}'
+# Disable Flask-DebugToolbar SQLAlchemy pane
+# https://github.com/mgood/flask-debugtoolbar/issues/112
+DEBUG_TB_PANELS = (
+    'flask_debugtoolbar.panels.versions.VersionDebugPanel',
+    'flask_debugtoolbar.panels.timer.TimerDebugPanel',
+    'flask_debugtoolbar.panels.headers.HeaderDebugPanel',
+    'flask_debugtoolbar.panels.request_vars.RequestVarsDebugPanel',
+    'flask_debugtoolbar.panels.config_vars.ConfigVarsDebugPanel',
+    'flask_debugtoolbar.panels.template.TemplateDebugPanel',
+    #'flask_debugtoolbar.panels.sqlalchemy.SQLAlchemyDebugPanel',
+    'flask_debugtoolbar.panels.logger.LoggingPanel',
+    'flask_debugtoolbar.panels.route_list.RouteListDebugPanel',
+    'flask_debugtoolbar.panels.profiler.ProfilerDebugPanel')
 {%- endif %}
 
 # JSONSchemas