added styling for QListWidget.
added styling for QListWidget.

aytekaman/appleseed,pjessesco/appleseed,Vertexwahn/appleseed,pjessesco/appleseed,gospodnetic/appleseed,Biart95/appleseed,appleseedhq/appleseed,gospodnetic/appleseed,aytekaman/appleseed,gospodnetic/appleseed,aiivashchenko/appleseed,est77/appleseed,est77/appleseed,dictoon/appleseed,docwhite/appleseed,Aakash1312/appleseed,pjessesco/appleseed,Aakash1312/appleseed,appleseedhq/appleseed,Aakash1312/appleseed,glebmish/appleseed,est77/appleseed,gospodnetic/appleseed,docwhite/appleseed,Vertexwahn/appleseed,aiivashchenko/appleseed,docwhite/appleseed,gospodnetic/appleseed,pjessesco/appleseed,est77/appleseed,Biart95/appleseed,Biart95/appleseed,aiivashchenko/appleseed,Vertexwahn/appleseed,luisbarrancos/appleseed,Aakash1312/appleseed,est77/appleseed,luisbarrancos/appleseed,dictoon/appleseed,glebmish/appleseed,appleseedhq/appleseed,glebmish/appleseed,aytekaman/appleseed,Vertexwahn/appleseed,appleseedhq/appleseed,luisbarrancos/appleseed,aytekaman/appleseed,aytekaman/appleseed,luisbarrancos/appleseed,docwhite/appleseed,Vertexwahn/appleseed,luisbarrancos/appleseed,appleseedhq/appleseed,Biart95/appleseed,glebmish/appleseed,dictoon/appleseed,aiivashchenko/appleseed,dictoon/appleseed,dictoon/appleseed,docwhite/appleseed,glebmish/appleseed,pjessesco/appleseed,Biart95/appleseed,aiivashchenko/appleseed,Aakash1312/appleseed