Adding deltaV data to Ship Market

Delta-V data entries for the ship market. Empty (with fuel only, no cargo or upgrades), Full (max cargo), Max (cargo is propellant).
Also added the lines (with tooltip description too) to the English lang file.

I've put The Max Delta-V to the secont column, so the layout is a bit better. I'm not sure if another column would look good on small screens or 4:3.

![screenshot-20140104-204317](https://f.cloud.github.com/assets/4182678/1845223/aab30cfe-7578-11e3-8064-d30c59d0a514.png)