Added support to framework for Child Themes:

* Looks for framework config file within child theme /prso_framework/ folder
File no longer required as theme functions.php boots framework
Made sure Config.php contains only Options vars and no framework code
BugFix: get_slug function using wrong theme_slug var
Added support for Child Themes framework Views folder, will fallback to Parent Theme if no folder/views found in child.
Allows Child Themes to override and add custom Walker classes by adding a walkers.php to child prso_framework dir.
Cleaned up config file and added a contents and better commenting, could be improved further
Removed call to config.php constructor as no longer used in config class file.
Removed custom wp actions and placed them into appropriate framework helpers.
New Helper - 'prso_get_related_posts'
Added Helper / Cleaned up class code and comments.

* Added 'prso_get_page_content' action.
Added Tag Cloud Widget Config Option
Cleaned up framework functions.php comments
Moved script/stylesheet merging functions into theme framework
Added vars for script/stylesheet merging
Added script/stylesheet merge functions
BugFix: Ensure framework loads using parent config file if child version is missing
Wrapped wp_nav_menu with logic to confirm Walker class exists.
Moved add_search_to_nav function into prso theme framework
Moved custom_pagination into theme framework