🎨 (Imports) Remove unused .jinja2 imports

Some lectures were importing from non-existant .jinja2 files which had been renamed to .html.

Also, cleaned up some code that had explicit comparisons such as `is not None` that aren't actually necessary.

Author: jslvtr

curriculum/section14/lectures/05_toggle_dark_mode_css_variables/README.md

@@ -1,4 +1,4 @@
-{% from "macros/svgs.jinja2" import moon, sun %}
+{% from "macros/svgs.html" import moon, sun %}
 
 {% macro header(email, theme) %}
 <header class="header">

curriculum/section14/lectures/05_toggle_dark_mode_css_variables/end/movie_library/templates/macros/nav.html

@@ -1,4 +1,4 @@
-{% from "macros/svgs.jinja2" import moon, sun %}
+{% from "macros/svgs.html" import moon, sun %}
 
 {% macro header(email, theme) %}
 <header class="header">

curriculum/section14/lectures/06_create_form_with_wtforms/end/movie_library/templates/macros/nav.html

@@ -1,4 +1,4 @@
-{% from "macros/svgs.jinja2" import moon, sun %}
+{% from "macros/svgs.html" import moon, sun %}
 
 {% macro header(email, theme) %}
 <header class="header">

curriculum/section14/lectures/06_create_form_with_wtforms/start/movie_library/templates/macros/nav.html

@@ -1,4 +1,4 @@
-{% from "macros/svgs.jinja2" import moon, sun %}
+{% from "macros/svgs.html" import moon, sun %}
 
 {% macro header(email, theme) %}
 <header class="header">

curriculum/section14/lectures/07_render_wtform_with_jinja_macros/README.md

@@ -1,4 +1,4 @@
-{% from "macros/fields.jinja2" import render_text_field %}
+{% from "macros/fields.html" import render_text_field %}
 
 {% extends "layout.html" %}
 

curriculum/section14/lectures/07_render_wtform_with_jinja_macros/end/movie_library/templates/macros/nav.html

@@ -1,4 +1,4 @@
-{% from "macros/svgs.jinja2" import moon, sun %}
+{% from "macros/svgs.html" import moon, sun %}
 
 {% macro header(email, theme) %}
 <header class="header">

curriculum/section14/lectures/07_render_wtform_with_jinja_macros/end/movie_library/templates/new_movie.html

@@ -1,4 +1,4 @@
-{% from "macros/svgs.jinja2" import moon, sun %}
+{% from "macros/svgs.html" import moon, sun %}
 
 {% macro header(email, theme) %}
 <header class="header">

curriculum/section14/lectures/07_render_wtform_with_jinja_macros/start/movie_library/templates/macros/nav.html

@@ -1,4 +1,4 @@
-{% from "macros/fields.jinja2" import render_text_field %}
+{% from "macros/fields.html" import render_text_field %}
 
 {% extends "layout.html" %}