fix unit test.
fix session CSRF cookie detection
Fix __construct

so it changes the behaviour when there are 2+ file matching the $file parameter

P.S.
When $file not found, how to know it? could we have a public flag, or a loaded() primitive?
Merge pull request #475 from ikkez/named-route-test-fix

fix named routes unit test
Merge pull request #476 from ikkez/fix-csrf-cookie

fix session CSRF cookie detection
Merge pull request #477 from emanwebdev/patch-3

Fix __construct
Conserve resources
Merge branch 'dev' of https://github.com/bcosca/fatfree into dev
Optimize code
Bug fix: stringify() recursion (Issue #478)
Minor fix in generated error message
Tweak stringify output
Deprecate {{~ ~}} instructions and {{* *}} comments; Use {~ ~} and {* *} instead
Modify unit tests to reflect updates
Allow override of DIACRITICS
NEW: EMOJI variable, UTF->decode, and UTF->emojify()
Rename decode() method to translate()
Allow empty strings in config()
Remove unused constant
Optimize code