[FIX] tracker plugin: Stop page exploding when there are validation issues with the "generate() on a non-object" error (by including captchalib and assigning the global before use). However, the antibot code should not be appearing for registered users even when making a mistake, so partial revert of r45315 to fix the logic here and moving the showmandatory assign out of the "if antibot" clause.
[FIX] tracker plugin: Stop page exploding when there are validation issues with the "generate() on a non-object" error (by including captchalib and assigning the global before use).
However, the antibot code should not be appearing for registered users even when making a mistake, so partial revert of r45315 to fix the logic here and moving the showmandatory assign out of the "if antibot" clause.

git-svn-id: bf8acf6ea2e0c2f171d9237652733ab0075b5b4c@45948 b456876b-0849-0410-b77d-98878d47e9d5

oregional/tiki,tikiorg/tiki,oregional/tiki,changi67/tiki,changi67/tiki,oregional/tiki,tikiorg/tiki,oregional/tiki,changi67/tiki,tikiorg/tiki,tikiorg/tiki,changi67/tiki,changi67/tiki