Showing all thread replies by default instead of 5

Also providing an argument numberposts to change the limit of replies

Fixes #129
Corrected WP coding standard
Showing correct owner in details meta box label

There was a bug (caused by incorrect arithmetic operator) due to which all
posts with owner were shown as "Unassigned"
Arranging if condition parameters in yoda notation
Merge pull request #134 from VarunAgw/bugs

Fix minor bugs:

* Show all replies on the Thread screen instead of last 5
* Show correct thread owner in details meta box label