Opposition decides to oust Senate chairman

* Conference agrees to bring no-confidence motion against Sadiq Sanjrani
* July 25 to be observed as 'black day' over 'rigging' in general elections
* Political parties urged to launch protest campaign against 'anti-people' budget
* Issue of production orders of Mohsin Dawar and Ali Wazir demanded
* Parliamentary committee should be formed to probe grants and debts acquired by country from year 2000 onwards