Merge branch '175-fix-wrong-whitespaces-in-url-tags' into 'master'

Resolve "Fix wrong whitespaces in url tags"

Closes #175

See merge request !211

CHANGELOG.rst

@@ -6,6 +6,14 @@ All notable changes to this project will be documented in this file.
 The format is based on `Keep a Changelog`_,
 and this project adheres to `Semantic Versioning`_.
 
+Unreleased
+----------
+
+Fixed
+~~~~~
+
+* Lesson view didn't work due to additional whitespaces in ``url`` tags.
+
 `2.0rc2`_ - 2021-06-26
 ----------------------