Merge pull request #2041 from jeffreythomas/5.2

[BACKLOG-801] - restConfig.properties being generated multiple times
[BACKLOG-795] - showing error message on error from SolutionFolderActionEvent.  Returning forbidden status from copy resource when access is denied.
Merge pull request #2044 from kurtwalker/BACKLOG-795-52

[BACKLOG-795] - showing error message on error from SolutionFolderAction...
[BACKLOG-780] PDI Visualize Perspective - Reload Model Button Not Working
Merge pull request #2045 from tkafalas/feature-5.2

[BACKLOG-780] PDI Visualize Perspective - Reload Model Button Not Workin...
[BACKLOG-830] - Regression: scheduler - generated outputs can't load CSS and images