AMMAN (Reuters) - Jordan's king on Sunday called for electoral changes to make parliament more representative, after Islamists boycotted last month's national poll saying rules were skewed against urban areas where they have most support. Independents and candidates allied to Jordan's powerful tribal establishment, which is strongest in the countryside, won most seats in the national elections January 23, after the Islamic Action Front, the Muslim Brotherhood's political wing in Jordan and the country's largest opposition party, shunned the vote. ...