remove unneeded +x bits

diff --git a/images/archive.png b/images/archive.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/art-email.png b/images/art-email.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/art-pub-note.png b/images/art-pub-note.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/art-set-unread.png b/images/art-set-unread.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/art-zoom.png b/images/art-zoom.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/cat-collapse.png b/images/cat-collapse.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/cat-uncollapse.png b/images/cat-uncollapse.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/digest_checkbox.png b/images/digest_checkbox.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/fresh.png b/images/fresh.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/fresh_sign.png b/images/fresh_sign.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/offline-sync.gif b/images/offline-sync.gif
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/offline.png b/images/offline.png
old mode 100755 (executable)
new mode 100644 (file)

diff --git a/images/online.png b/images/online.png
old mode 100755 (executable)
new mode 100644 (file)