Compiles css framework from sass (#1956)

* Compiles css framework from sass

* Adds watch commands

* Copies existing css to sass file

* Moves sass out of static path

* Removes global linter

I wasn't sure how to customize this, and it's not providing a lot of
additional value on top of the domain-specific linters

* Reverts invalid change to dockerfile

* Changes stylelint path

* Remove unused bulma files

* Properly minifies generated css

* Fixes regression in thread display

* rgba function only works with percents for whatever reason

* Hush stylelint

* Removes trailing zeros

* Compile sass in Django

Co-authored-by: Joachim <joachim.robert@protonmail.com>

* Python formatting

* Updates linter

* Updates commands

* Adds css-config file

Co-authored-by: Joachim <joachim.robert@protonmail.com>

* Stylelint fix

* Removes unused compiled bulma files

Co-authored-by: Joachim <joachim.robert@protonmail.com>

bookwyrm/static/css/vendor/bulma/sass/elements/other.sass

@@ -0,0 +1,31 @@
+@import "../utilities/mixins"
+
+.block
+  @extend %block
+
+.delete
+  @extend %delete
+
+.heading
+  display: block
+  font-size: 11px
+  letter-spacing: 1px
+  margin-bottom: 5px
+  text-transform: uppercase
+
+.loader
+  @extend %loader
+
+.number
+  align-items: center
+  background-color: $background
+  border-radius: $radius-rounded
+  display: inline-flex
+  font-size: $size-medium
+  height: 2em
+  justify-content: center
+  margin-right: 1.5rem
+  min-width: 2.5em
+  padding: 0.25rem 0.5rem
+  text-align: center
+  vertical-align: top