Picard updates (#4023)

* updated default browser patch
* custom icon

media-sound/picard/patches/picard-2.1.3.patchset

@@ -37,17 +37,18 @@ index 117391fc..839a2f20 100644
 --
 2.21.0
 
-From 75d7a1fea21f169da24e9b1003d6b9f928dcdb71 Mon Sep 17 00:00:00 2001
+From 43065c9cfaed92f68d8c80aed220016e5815d260 Mon Sep 17 00:00:00 2001
 From: Philipp Wolfer <ph.wolfer@gmail.com>
 Date: Tue, 29 Jan 2019 11:35:33 +0000
-Subject: [PATCH 2/2] Haiku: Use WebPositive as default browser
+Subject: [PATCH 2/3] Haiku: open URLs with default browser
 
+Try opening with "open", fall back to WebPositive
 ---
- picard/util/webbrowser2.py | 7 ++++++-
- 1 file changed, 6 insertions(+), 1 deletion(-)
+ picard/util/webbrowser2.py | 9 ++++++++-
+ 1 file changed, 8 insertions(+), 1 deletion(-)
 
 diff --git a/picard/util/webbrowser2.py b/picard/util/webbrowser2.py
-index 7d003ccf..bacd8a13 100644
+index 7d003ccf..3c1c9c2a 100644
 --- a/picard/util/webbrowser2.py
 +++ b/picard/util/webbrowser2.py
 @@ -17,7 +17,7 @@
@@ -59,13 +60,15 @@ index 7d003ccf..bacd8a13 100644
  import webbrowser
 
  from PyQt5 import QtWidgets
-@@ -32,6 +32,11 @@ in PyQt and also adds a utility function for opening Picard URLS.
+@@ -32,6 +32,13 @@ in PyQt and also adds a utility function for opening Picard URLS.
  """
 
 
 +if platform == "haiku1":
++    haiku_default = webbrowser.GenericBrowser("open")
++    webbrowser.register("haiku-default", None, haiku_default, True)
 +    webpositive = webbrowser.GenericBrowser("WebPositive")
-+    webbrowser.register("webpositive", None, webpositive, True)
++    webbrowser.register("webpositive", None, webpositive)
 +
 +
  def open(url):