'theme_switcher,' 'theme-picker' & 'theme' renamed everywhere to simply 'palette'; new urls & views & their corresponding ITs ensure applet menu checkbox functionality

src/functional_tests/test_applet_palette.py

@@ -0,0 +1,10 @@
+from selenium.webdriver.common.by import By
+
+from .base import FunctionalTest
+
+
+class SiteThemeTest(FunctionalTest):
+    def test_page_renders_with_earthman_palette(self):
+        self.browser.get(self.live_server_url)
+        body = self.browser.find_element(By.TAG_NAME, "body")
+        self.assertIn("palette-default", body.get_attribute("class"))