got rid of warnings at startup

init/InitButtons.py

@@ -64,7 +64,7 @@ def Init(parent):
     parent.button_zoom.setIcon(QtGui.QIcon('./icons/ZoomIcon.png'))
     parent.button_zoom.setMaximumWidth(30)
     parent.button_zoom.setMaximumHeight(30)
-    parent.button_zoom.setStyleSheet("border: 0px" "QPushButton:hover { background-color: blue }" )
+    parent.button_zoom.setStyleSheet("QPushButton:hover { background-color: blue }" )
     parent.button_zoom.setCheckable(True)
     parent.button_zoom.setShortcut("Z")
     parent.button_zoom.setToolTip("Use Z Key for shortcut")
@@ -76,7 +76,7 @@ def Init(parent):
     parent.button_home.setIcon(QtGui.QIcon('./icons/HomeIcon.png'))
     parent.button_home.setMaximumWidth(30)
     parent.button_home.setMaximumHeight(30)
-    parent.button_home.setStyleSheet("border: 0px" "QPushButton:hover { background-color: blue }" )
+    parent.button_home.setStyleSheet("QPushButton:hover { background-color: blue }" )
     parent.button_home.setShortcut("H")
     parent.button_home.setToolTip("Use H Key for shortcut")
     parent.button_home.setStatusTip('Reset Zoom')
@@ -88,7 +88,7 @@ def Init(parent):
     parent.button_back.setIcon(QtGui.QIcon('./icons/LeftArrowIcon.png'))
     parent.button_back.setMaximumWidth(30)
     parent.button_back.setMaximumHeight(30)
-    parent.button_back.setStyleSheet("border: 0px" "QPushButton:hover { background-color: blue }" )
+    parent.button_back.setStyleSheet("QPushButton:hover { background-color: blue }" )
     parent.button_back.setStatusTip('Go back to previous zoom scale')
     parent.buttonlist.append(parent.button_back)
     
@@ -98,7 +98,7 @@ def Init(parent):
     parent.button_forward.setIcon(QtGui.QIcon('./icons/RightArrowIcon.png'))
     parent.button_forward.setMaximumWidth(30)
     parent.button_forward.setMaximumHeight(30)
-    parent.button_forward.setStyleSheet("border: 0px" "QPushButton:hover { background-color: blue }" )
+    parent.button_forward.setStyleSheet("QPushButton:hover { background-color: blue }")
     parent.button_back.setStatusTip('Go to next zoom scale')
     parent.buttonlist.append(parent.button_forward)
     
@@ -108,7 +108,7 @@ def Init(parent):
     parent.button_pan.setIcon(QtGui.QIcon('./icons/MoveArrowsIcon.png'))
     parent.button_pan.setMaximumWidth(30)
     parent.button_pan.setMaximumHeight(30)
-    parent.button_pan.setStyleSheet("border: 0px" "QPushButton:hover { background-color: blue }" )
+    parent.button_pan.setStyleSheet("QPushButton:hover { background-color: blue }")
     parent.button_pan.setCheckable(True)
     parent.button_pan.setShortcut("P")
     parent.button_pan.setToolTip("Use P Key for shortcut")