Various Dark Theme fixes per QA feedback (#1212)

* Fix CORS issue on in-line theming javascript

* Fix date picker icon color

* Add comment

* Fix table theming in dark mode

* Selfhosted navbar fix

* Rename selector to avoid clashing with bootstrap

* Do not set initial theme if default

* Fix .text-danger style in dropdown lists

* Fix toast style, restructure toast and card scss

* Fix table and dropdown list hover color

* Use callout component for Disable Send warning

* Remove unneeded theming for hovering over links

* Undo changes to register enterprise2 layout

* Apply theming to Safari input field icons

e.g. Caps lock, password autofill

* Selectively apply themed logo CSS

* Fix unrelated linting

* Fix webpack config to bundle theme.js

Co-authored-by: Danny Murphy <6512845+dltmurphy@users.noreply.github.com>

src/scss/export.module.scss

@@ -1,8 +1,8 @@
 @import 'variables';
 
 :export {
-    lightInputColor: $lightInputColor;
-    lightInputPlaceholderColor: $lightInputPlaceholderColor;
     darkInputColor: $darkInputColor;
     darkInputPlaceholderColor: $darkInputPlaceholderColor;
+    lightInputColor: $lightInputColor;
+    lightInputPlaceholderColor: $lightInputPlaceholderColor;
 }