add the hidden/ghost behaviour:
- The view hide or show the nodes calling their functions hide() or show(ghost).
- The node and the edges have the attributes 'hidden' and 'ghost' to properly redraw them selves.
rootProject.name = 'renkan'
include ':renkan-core'
include ':renkan-web'
include ':renkan-management'
project(':renkan-core').projectDir = "$rootDir/renkan-core" as File
project(':renkan-web').projectDir = "$rootDir/renkan-web" as File
project(':renkan-management').projectDir = "$rootDir/renkan-management" as File