[FIXED JENKINS-22311] Show queue item parameters in tool tip

How build parameters are currently displayed makes them difficult to read:

![screen shot 2014-12-20 at 13 28 22](https://cloud.githubusercontent.com/assets/1831569/5514815/f83ee866-884c-11e4-95b7-fd009d301088.png)

This change replaces them with an icon that, when hovered, shows the parameters in the tool tip:

![screen shot 2014-12-20 at 13 28 40](https://cloud.githubusercontent.com/assets/1831569/5514820/0cef8586-884d-11e4-951b-2af829bf050b.png)

Since no line breaks are necessary to maintain the page layout, slightly longer parameter values don't need to be broken. Every parameter is on its own line.

Only tested on OS X Firefox 34.0.5.

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Added a tool tip to the projected build number as well. It's not guaranteed to be build `#5` for a number of reasons.