SingleObjectiveTestFunctionSolutionView throws Exception for ProblemSize == 1

[bwerth]

The SingleObjectiveTestFunctionSolutionView always generates an image for a 2-d representation even if the actual ProblemSize differs (Image is set as invisible). In high dimensional cases this is wasteful and in the one dimensional case it creates OutOfBoundsExceptions.

[bwerth]

r15336 added dimensionality check before image generation

[abeham]

Review comments:

• Either the null check for Content in line 139 is unnecessary or your changes may lead to a NullReferenceException because you access BestRealVector without null checking first.
• Either the null check for Content.BestRealVector in line 163 is unnecessary or your changes may lead to a NullReferenceException because you access its Length property without null checking first.

[bwerth]

r15383 changed dimensionality check to be much more defensive

[abeham]

Reviewed and tested r15383: Ok, thanks!

[bwerth]

r15387 merged r15336, r15383 to stable