Removed quote conversion to entity inside content

Encoding quotes inside element contents may be not necessary
Test enc output rule
Merge remote-tracking branch 'origin/patch-1' into patch-2
Added a test for 8785fc5775df52dd4a6b63677ebd08f8301ffdcc
escaping attributes in a different way
tests and html5 standards
Tests and code style + nbsp handling
Merge pull request #25 from goetas/patch-2

Removed quote conversion to entity inside content