callview: improve ui for current and incoming callview

Modify buttons style in incoming and current callview.

Change-Id: I7ee2245596e5587c4aa6072b9117c433241d63a2
diff --git a/pixmaps/accept.svg b/pixmaps/accept.svg
index 7790f84..f00700c 100644
--- a/pixmaps/accept.svg
+++ b/pixmaps/accept.svg
@@ -1,190 +1,4 @@
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-        <dc:title>accept.svg</dc:title>
-        <dc:date>2014/06/24</dc:date>
-        <dc:creator>
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