#19 Printing: center pages, add footer

[Me]

The following patch adds the option to center the map
vertically or horizontally and to print a footer on every
page (left, center and right footer). The patch is
against 0.7.1.

Hope it helps. Thanks for your work.

In the Holy Eucharist,
Omar

[Me]

Printing patch for 0.7.1: center pages, footer