condtion should be optional in "else" clause in configuration file

[jrabbit]

The conditional configuration construct:

<field> <operator> <value> {
  ...
}
else <field> <operator> <value> {
  ... the "else if" block
}

would be more useful if it allowed a bare "else" with no condition - i.e.

<field> <operator> <value> {
  ...
}
else <field> <operator> <value> {
  ... the "else if" block
}
else {
  ... the "else" block
}