Change LibraryOption to match backend

Changed "disable" to "enable" to match backend. It makes more sense to
have it be "enable" because that's what the checkbox says. Now no weird
"not" logic is needed to send options to the backend.

src/components/libraryoptionseditor/libraryoptionseditor.template.html

@@ -1,5 +1,5 @@
 <h2>${HeaderLibrarySettings}</h2>
-<div class="checkboxContainer checkboxContainer-withDescription chkEnable">
+<div class="checkboxContainer checkboxContainer-withDescription chkEnabledContainer">
     <label>
         <input type="checkbox" is="emby-checkbox" class="chkEnabled" checked />
         <span>${EnableLibrary}</span>