Split the assurance case documentation into different pages

org.fortiss.af3.rcp.help/html/.ratings

org.fortiss.af3.rcp.help/html/assuranceCases/.ratings

org.fortiss.af3.rcp.help/html/assuranceCases/assesment.html

org.fortiss.af3.rcp.help/html/assuranceCases/creation.html

...fortiss.af3.rcp.help/html/assuranceCases/maintenance.html

...iss.af3.rcp.help/html/assuranceCases/pictures/Export1.png

...iss.af3.rcp.help/html/assuranceCases/pictures/Export2.png

...iss.af3.rcp.help/html/assuranceCases/pictures/Export3.png

...iss.af3.rcp.help/html/assuranceCases/pictures/Export4.PNG

...f3.rcp.help/html/assuranceCases/pictures/Maintenance1.PNG

...f3.rcp.help/html/assuranceCases/pictures/Maintenance2.PNG

...f3.rcp.help/html/assuranceCases/pictures/Maintenance3.PNG

...f3.rcp.help/html/assuranceCases/pictures/Maintenance4.PNG

...f3.rcp.help/html/assuranceCases/pictures/Maintenance5.PNG

.../html/assuranceCases/pictures/MaintenanceExplicitCase.PNG

...ortiss.af3.rcp.help/html/assuranceCases/pictures/SC.1.png

...rtiss.af3.rcp.help/html/assuranceCases/pictures/SC.10.png

...tiss.af3.rcp.help/html/assuranceCases/pictures/SC.10x.png

...rtiss.af3.rcp.help/html/assuranceCases/pictures/SC.11.png

...rtiss.af3.rcp.help/html/assuranceCases/pictures/SC.12.png