#79: Change background and logo image

docs-core/src/main/java/com/sismics/docs/core/model/context/AppContext.java

@@ -72,7 +72,7 @@ public class AppContext {
         eventBus = new EventBus();
         eventBus.register(new DeadEventListener());
         
-        asyncExecutorList = new ArrayList<ExecutorService>();
+        asyncExecutorList = new ArrayList<>();
         
         asyncEventBus = newAsyncEventBus();
         asyncEventBus.register(new FileCreatedAsyncListener());

docs-core/src/main/java/com/sismics/docs/core/util/DirectoryUtil.java

@@ -86,6 +86,15 @@ public class DirectoryUtil {
         return getDataSubDirectory("log");
     }
 
+    /**
+     * Returns the theme directory.
+     *
+     * @return Theme directory.
+     */
+    public static Path getThemeDirectory() {
+        return getDataSubDirectory("theme");
+    }
+
     /**
      * Returns a subdirectory of the base data directory
      * 

docs-core/src/main/java/com/sismics/util/mime/MimeTypeUtil.java

@@ -1,5 +1,6 @@
 package com.sismics.util.mime;
 
+import java.io.IOException;
 import java.io.InputStream;
 import java.io.UnsupportedEncodingException;
 
@@ -21,16 +22,16 @@ public class MimeTypeUtil {
      * 
      * @param is Stream to inspect
      * @return MIME type
-     * @throws Exception
+     * @throws IOException
      */
-    public static String guessMimeType(InputStream is) throws Exception {
+    public static String guessMimeType(InputStream is) throws IOException {
         byte[] headerBytes = new byte[64];
         is.mark(headerBytes.length);
         int readCount = is.read(headerBytes);
         is.reset();
         
         if (readCount <= 0) {
-            throw new Exception("Cannot read input file");
+            throw new IOException("Cannot read input file");
         }
         
         return guessMimeType(headerBytes);