Address log4j2 string to format review and add license to css files

Author: BryanMLima

server/src/main/java/org/apache/cloudstack/gui/theme/GuiThemeServiceImpl.java

@@ -166,7 +166,7 @@ protected void persistGuiThemeDetails(long guiThemeId, String commonNames, Strin
 
     protected void persistDetailValueIfNotNull(long guiThemeId, String providedParameter, String type) {
         if (providedParameter == null) {
-            logger.trace(String.format("GUI theme provided parameter `%s` is null; therefore, it will be ignored.", type));
+            logger.trace("GUI theme provided parameter `{}` is null; therefore, it will be ignored.", type);
             return;
         }
         for (String splitParameter : StringUtils.deleteWhitespace(providedParameter).split(",")) {
@@ -258,7 +258,7 @@ protected void validateJsonConfiguration(String jsonConfig) {
             Set<Map.Entry<String, JsonElement>> entries = jsonElement.getAsJsonObject().entrySet();
             entries.stream().forEach(entry -> validateJsonAttributes(entry, jsonObject));
         } catch (JsonSyntaxException exception) {
-            logger.error(String.format("The following exception was thrown while parsing the JSON object: [%s].", exception.getMessage()));
+            logger.error("The following exception was thrown while parsing the JSON object: [{}].", exception.getMessage());
             throw new CloudRuntimeException("Specified JSON configuration is not a valid JSON object.");
         }
     }
@@ -272,7 +272,7 @@ private void validateJsonAttributes(Map.Entry<String, JsonElement> entry, JsonOb
         String entryKey = entry.getKey();
 
         if (entryValue.isJsonPrimitive() && ALLOWED_PRIMITIVE_PROPERTIES.contains(entryKey)) {
-            logger.trace("The JSON attribute [%s] is a valid option.");
+            logger.trace("The JSON attribute [{}] is a valid option.", entryKey);
             jsonObject.add(entryKey, entryValue);
         } else if (entryValue.isJsonObject() && ERROR.equals(entryKey)) {
             validateErrorAttribute(entry, jsonObject);
@@ -330,7 +330,7 @@ protected JsonObject createJsonObject(Set<Map.Entry<String, JsonElement>> entrie
     }
 
     protected void warnOfInvalidJsonAttribute(String entryKey) {
-        logger.warn(String.format("The JSON attribute [%s] is not a valid option, therefore, it will be ignored.", entryKey));
+        logger.warn("The JSON attribute [{}] is not a valid option, therefore, it will be ignored.", entryKey);
     }
 
     /**
@@ -407,7 +407,7 @@ protected GuiThemeJoinVO persistGuiTheme(Long guiThemeId, String name, String de
                 guiThemeVO.setRecursiveDomains(recursiveDomains);
             }
 
-            logger.trace(String.format("Persisting GUI theme [%s] with CSS [%s] and JSON configuration [%s].", guiThemeVO, guiThemeVO.getCss(), guiThemeVO.getJsonConfiguration()));
+            logger.trace("Persisting GUI theme [{}] with CSS [{}] and JSON configuration [{}].", guiThemeVO, guiThemeVO.getCss(), guiThemeVO.getJsonConfiguration());
 
             guiThemeDao.persist(guiThemeVO);
             guiThemeDetailsDao.expungeByGuiThemeId(guiThemeId);
@@ -433,7 +433,7 @@ public void removeGuiTheme(RemoveGuiThemeCmd cmd) {
         if (guiThemeVO != null) {
             guiThemeDao.remove(guiThemeId);
         } else {
-            logger.error(String.format("Unable to find a GUI theme with the specified ID [%s].", guiThemeId));
+            logger.error("Unable to find a GUI theme with the specified ID [{}].", guiThemeId);
             throw new CloudRuntimeException("Unable to find a GUI theme with the specified ID.");
         }
     }

ui/public/css/apache-theme.css

@@ -1,3 +1,22 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License.  You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied.  See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
 @import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
 
 :root {

ui/public/css/dark-theme.css

@@ -1,3 +1,22 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements.  See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership.  The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License.  You may obtain a copy of the License at
+*
+*   http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied.  See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
 @import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
 
 :root {