Update core/components/phpthumbof/model/phpthumbof/phpthumbof.class.php

urldecode should be left down to the user and not automatically done, this
has caused me so much trouble as I was using urlencode in order to fix spaces
in url but phpthumb would fail when it tries to do file_get_contents on line
3210 of phpthumb.class.php [https://github.com/modxcms/revolution/blob/develop/core/model/phpthumb/phpthumb.class.php#L3210]
Make sure a "not parsed" placeholder do not trigger the thumb generation
Improve file naming with phpthumof.hash_thumbnail_names off

Fixes two problems:
1. Gives different names to files in different directories which happen
to have the same name, phpthumb options and be called from the same
resource.
2. Doesn't give a diffenent name to the same file with the same options
when it's called from different resources.
Naming improvements for cache files; disable cache cleanup for better performance
Revert "Naming improvements for cache files; disable cache cleanup for better performance"

This reverts commit af410a915425e647733baccec4a4ba12720845a9.
Fix bug on clearing cache.
Merge remote-tracking branch 'splittingred/pr/47' into pr-47
Merge remote-tracking branch 'splittingred/pr/49' into pr-49
Merge remote-tracking branch 'splittingred/pr/50' into pr-50
Adding README
Merge branch 'read-me' into develop
Create README.md
Update README.md
Updating changelog
Merge branch 'develop' of https://github.com/modxcms/phpThumbOf into develop

Conflicts:
	README.md