Fixed typo error
Removed empty line
Removed empty line
Fix #3189
[ci skip] Update a comment block description
Close #3205
Merge pull request #3202 from rougin/patch-1

Fixed typo error
[ci skip] Fix routing documentation (#3192)

It described a feature that doesn't exist.
Add CI_Security::get_random_bytes() for CSRF & XSS token generation