Allow system principal and "modify request"-hooked by default

Since having them disabled breaks not only addons but even some of firefox
features.

This was the behavior before introduction of "http-on-modify-request" hook
anyway.

close #148

src/defaults/rulesets/compatibility.ruleset

@@ -57,18 +57,3 @@ rules:
     # like magnet, irc, webcal, custombutton, etc
     # by allowing any documents from such schemes.
     [contentType] DOCUMENT: ACCEPT
-
-  * -> *:
-    # Allows requests having system principal
-    # TODO A lot of addons seem to be using nsIHTTPChannel and for now this is
-    # the most obvious way not to break them. But this also allows favicon and
-    # google safebrowsing (and maybe more) requests that may be unwanted by
-    # user. This is hopefully a temporary solution until a good way of dealing
-    # with such requests is developed
-    [specialPrincipal] system: ACCEPT
-
-  * -> *:
-    # Allows requests hooked by "http-on-modify-request" observer
-    # TODO Highly related to the above todo, this effectively makes the observer
-    # hook useless. Temporary solution, hopefully.
-    [hook] modifyRequest: ACCEPT

src/defaults/rulesets/default.ruleset

@@ -40,3 +40,18 @@ rules:
   (web|file) -> internal:
     # top-level media player and image viewer require internal styles
     [contentType] STYLESHEET: ACCEPT
+
+  * -> *:
+    # Allows requests having system principal
+    # TODO A lot of addons seem to be using nsIHTTPChannel and for now this is
+    # the most obvious way not to break them. But this also allows favicon and
+    # google safebrowsing (and maybe more) requests that may be unwanted by
+    # user. This is hopefully a temporary solution until a good way of dealing
+    # with such requests is developed
+    [specialPrincipal] system: ACCEPT
+
+  * -> *:
+    # Allows requests hooked by "http-on-modify-request" observer
+    # TODO Highly related to the above todo, this effectively makes the observer
+    # hook useless (except for requests mangled by lib/request-info).
+    [hook] modifyRequest: ACCEPT