- add points and dot rendermode

- add option to toggle between gl_PointSize or quad extrusion in geometry shader
7 jobs for splatcloud_rendering in 43 minutes and 12 seconds
Status Job ID Name Coverage
  Test
passed #26688
Apple
Mac-Cpp11

00:39:17

passed #26687
Qt551 VS2013
VS2013-Qt-5.5.1-x64

00:20:27

passed #26686
Qt56 VS2015
VS2015-Qt-5.6.0-x32

00:22:44

passed #26685
Qt56 VS2015
VS2015-Qt-5.6.0-x64

00:26:24

passed #26683
MultiThreads Linux
clang-c++11-Qt5

00:10:54

passed #26684
MultiThreads Linux
cppcheck

00:03:13

passed #26682
Linux
gcc-c++11-Qt5

00:03:27