(url) Fix urlencoding issues with certain symbols

Minor fix of issue where url sanitizer would strip some trailing slashes.

code/common/model/java/nu/marginalia/model/EdgeUrl.java

@@ -248,6 +248,10 @@ class EdgeUriFactory {
             }
         }
 
+        if (path.endsWith("/")) {
+            sb.append('/');
+        }
+
     }
 
     private static void recombineQueryString(StringBuilder sb, String param) {

code/common/model/test/nu/marginalia/model/EdgeUrlTest.java

@@ -24,7 +24,9 @@ class EdgeUrlTest {
 
     @Test
     void testUriFromString() throws URISyntaxException {
+        Assertions.assertEquals("https://www.example.com/", EdgeUriFactory.uriFromString("https://www.example.com/").toString());
         Assertions.assertEquals("https://www.example.com/", EdgeUriFactory.uriFromString("https://www.example.com/#heredoc").toString());
+        Assertions.assertEquals("https://www.example.com/trailingslash/", EdgeUriFactory.uriFromString("https://www.example.com/trailingslash/").toString());
         Assertions.assertEquals("https://www.example.com/%25-sign", EdgeUriFactory.uriFromString("https://www.example.com/%-sign").toString());
         Assertions.assertEquals("https://www.example.com/%22-sign", EdgeUriFactory.uriFromString("https://www.example.com/%22-sign").toString());
         Assertions.assertEquals("https://www.example.com/%0A+%22huh%22", EdgeUriFactory.uriFromString("https://www.example.com/\n \"huh\"").toString());