Fix #2963

Changed all file permissions settings throught the framework
and the documentation.

Also added configuration settings for CI_Log and CI_Image_lib
diff --git a/user_guide_src/source/libraries/zip.rst b/user_guide_src/source/libraries/zip.rst
index 5ff7d07..4ca1408 100644
--- a/user_guide_src/source/libraries/zip.rst
+++ b/user_guide_src/source/libraries/zip.rst
@@ -173,7 +173,7 @@
 		:rtype:	bool
 
 		Writes the Zip-encoded file to a directory on your server. Submit a valid server path ending in the file name.
-		Make sure the directory is writable (660 or 666 is usually OK). Example::
+		Make sure the directory is writable (755 is usually OK). Example::
 
 			$this->zip->archive('/path/to/folder/myarchive.zip'); // Creates a file named myarchive.zip