Issue Tracker 1.5.2

This release corrects any remaining problems found in the earlier releases in this branch.

~ Change copyright notice to 2014.

# Fix additional of additional information by identifier in front end.

# Fix reset of state flag on issue in front end on non-closed issues.

# Correct return address in front end when using IIS web server.

# Correct erroneous semi colons in language strings.

# Correct determination of anonymous user id.

~ Update hathor templates overrides used within Joomla 3.2

+ Add a default assignee for each project.

~ Change front end issue save such that project defined assignee is checked prior to component default assignee.