1. install new plugins:
  - ./tracticketchangelogplugin-0.1-py2.7.egg
  - ./traccodecomments-1.1.1-py2.7.egg
  - ./tracxmlrpc-1.1.2_r13203-py2.7.egg
 2. increase attachment upload site for default env
{{{
[attachment]
max_size = 16777216
}}}