UI/UX: refactor conversation view

This patch refactor elements placement on send panel and actions
panel of conversation view.

Change-Id: I2a934bc052333770af2d7cbde12ec471c55ca481
Reviewed-by: Andreas Traczyk <andreas.traczyk@savoirfairelinux.com>
diff --git a/src/views/HoverButton.mm b/src/views/HoverButton.mm
index 7963527..086d2ad 100644
--- a/src/views/HoverButton.mm
+++ b/src/views/HoverButton.mm
@@ -34,7 +34,9 @@
 }
 
 -(void)mouseEntered:(NSEvent *)theEvent {
-    self.bgColor = self.hoverColor;
+    if(self.isEnabled) {
+        self.bgColor = self.hoverColor;
+    }
     [super setNeedsDisplay:YES];
     [super mouseEntered:theEvent];
 }