[Web] Add more sieve presets

data/web/inc/presets/sieve/sieve_1.yml

@@ -1,7 +1,10 @@
 headline: lang.sieve_preset_1
 content: |
-  if header :contains "x-attached"
-    [".exe",".bat",".js",".com",".cmd",".ini",".dll",".bas",".cpl",".drv",".inf",".sys",".pif",".doc",".docx"] {
-    discard;
-    stop;
-  }
+  require ["reject","body","regex"];
+  if anyof (body :raw :regex ["filename=.*\.doc","filename=.*\.exe","filename=.*\.moo"]) {
+    reject text:
+  doc, exe and moo are dangerous file extensions.
+  Why would you do that? I am a sad cow.
+  .
+  ;
+  }