Remove a redundant web view

[puripant]

Issue

Partially fix #204

Description of changes

I remove one _new_webview() out of _create_layout().

From my understanding, handleNewSignals() calls either _apply_topic(), _apply_corpus(), or clear(). The latter directly calls _new_webview() while the first two call _repopulate_wordcloud() and then on_cloud_pref_change() which calls _new_webview() in the end. So, calling _new_webview() in _create_layout() is unnecessary and actually redundant.

Includes

• Code changes
• Tests
• Documentation

[codecov-io]

Codecov Report

Merging #464 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #464   +/-   ##
=======================================
  Coverage   85.88%   85.88%           
=======================================
  Files          34       34           
  Lines        1927     1927           
  Branches      329      329           
=======================================
  Hits         1655     1655           
  Misses        232      232           
  Partials       40       40

[ajdapretnar]

Real nice! Thank you! ⭐️