[ticket/12035] Adding link to user posts to ACP page

Adding link of posts behind displayed number of posts of the user

PHPBB3-12035
[ticket/12035] Adding necessary conditions

PHPBB3-12035
[ticket/12035] Correcting the condition

PHPBB3-12035
Merge remote-tracking branch 'geetakshi/ticket/12035' into develop-olympus

* geetakshi/ticket/12035:
  [ticket/12035] Correcting the condition
  [ticket/12035] Adding necessary conditions
  [ticket/12035] Adding link to user posts to ACP page