Started design for story 147

The design is still incomplete. 


Story: #147
Task: #334
1st line

story: #147
task: #444
Started design for story 147

Introduction and Scope 


Story: #147
Task: #334
Merge remote-tracking branch 'origin/stories/147' into stories/147

Conflicts:
	story147.asciidoc
Added table of contents


Story: 148
Task: 445
extend toward requirements

story: #148
task: #4812
Risk analysis complete

Story: #148
Task: #445
Merge branch 'stories/148' into devel
Story description

Story: #149
Task: #225
all features done

Story: #149
Task: #225
Merge branch 'stories/149' into devel
Merge branch 'devel'