Merge branch 'release/0.9.3-1'

server/core/FileDetector/signatures.json

@@ -674,7 +674,9 @@
       { "type": "or", "rules":
       [
         { "type": "equal", "end": 19, "bytes": "3c3f786d6c2076657273696f6e3d22312e3022" },
-        { "type": "equal", "end": 22, "bytes": "efbbbf3c3f786d6c2076657273696f6e3d22312e3022" }
+        { "type": "equal", "end": 22, "bytes": "efbbbf3c3f786d6c2076657273696f6e3d22312e3022" },
+        { "type": "equal", "end": 19, "bytes": "3c3f786d6c2076657273696f6e3d27312e3027" },
+        { "type": "equal", "end": 22, "bytes": "efbbbf3c3f786d6c2076657273696f6e3d27312e3027" }
       ]
       }
     ]
@@ -689,6 +691,16 @@
     ]
   },
 
+  {
+    "type": "djvu",
+    "ext": "djvu",
+    "mime": "image/vnd.djvu",
+    "rules": [
+      { "type": "equal", "start": 0, "end": 8, "bytes": "41542654464f524d" },
+      { "type": "equal", "start": 12, "end": 15, "bytes": "444a56" }
+    ]
+  },  
+
   {
     "type": "html",
     "ext": "html",