Fixed problem of the noise ordering. Nsig is not scaled by the length and dt anymore... To fix

git-svn-id: https://repo.thevirtualbrain.org/svn/tvb/trunk/scientific_library@5216 1c0e02f0-7929-43c0-8fb3-3293bf43b0d1
Add a constant history length to scale the drift term of the diffusion process used to define the default initial history. See NOTE in initial. Next step: strictly bound the diffusion process to the sv ranges

git-svn-id: https://repo.thevirtualbrain.org/svn/tvb/trunk/scientific_library@5217 1c0e02f0-7929-43c0-8fb3-3293bf43b0d1
Clean pdb trace and print lines

git-svn-id: https://repo.thevirtualbrain.org/svn/tvb/trunk/scientific_library@5218 1c0e02f0-7929-43c0-8fb3-3293bf43b0d1
Can't sleep ... Correct nsig scaling factor from steps to time

git-svn-id: https://repo.thevirtualbrain.org/svn/tvb/trunk/scientific_library@5219 1c0e02f0-7929-43c0-8fb3-3293bf43b0d1