Raise package release version number to "1.0.8".
Update documentation / help files and various utilities.
Update "Default_Layouts.rc" layouts file.
Remove unused imports.
Add "umbra.preferences.Preferences.keyExists" method.
Restore "scriptEditor" component printing.
Update "componentsManagerUi" component "PathNode" class family.
Update various "scriptEditor" component nodes family.
Update "traceUi" component "ModuleNode" class family.
Update "CHANGES.rst" file.
Restore "Crittercism" application id.
Update requirements in "Pypi" setup file.
Update "Pypi" setup file.
Merge branch 'feature/v1.0.8' into develop