Use width and height of container rather than parent

Use width() and height() on container rather than innerWidth()
and innerHeight() of parent. innerXXX() includes the padding.

Change-Id: I039f60daa8516c10be84ca8e96b6b45875432dd3
Add server option to chose host to listen on

Add -i or --host option to allow host to be selected, useful if
machine has multiple network interfaces. Had to use -i as -h is
taken by help.

Change-Id: Ic3d524e0a6d3fd8ed4937d03d5d4dba825f15156
Merge topic 'vtk-web-fixes' into master

0e5cfed7 Add server option to chose host to listen on
734f1d1a Use width and height of container rather than parent