bug fix
implement query discussion comments
implement discussion controllers
re-arrange discussion implements
fix missing collection bug
update basic discussion structures
remove unnecessary array calls
modify HTMLPurifier cache directory
implement basic discussion functions
added user utile
replace |html, |attr, |json with Phalcon native filters
move page classes into <html>
implement user/face
implement sub-discussions
implement date time formatter
Merge branch 'feature-discussion' into develop
Merge branch 'feature-dateformat' into develop