[ENHANCEMENT] TICKET #1191 LIST OF COMMITMENTS COULD USE A 'SEND' ACTION BUTTON

Hello, I have added a 'Send' action button which should do the same as 'Prepare Shipment' for main list: req/commit & the component list req/req/x/commit.

refrence: http://eden.sahanafoundation.org/ticket/1191
![button 1](https://f.cloud.github.com/assets/3114839/347267/0dcf7946-9eb8-11e2-88b0-effa9c46c1da.png)
![button2](https://f.cloud.github.com/assets/3114839/347268/1878a67e-9eb8-11e2-8fd5-3b6b947b299b.png)