Add Unit Templates

[nickbabcock]

Army and navy units can have templates such as the following:

        army_templates=
        {

            {
                name=""
                spread=12
                mercenary=yes
                infantry=7
                cavalry=4
                artillery=1
            }

            {
                name="2/1"
                spread=15
                mercenary=no
                infantry=10
                cavalry=0
                artillery=5
            }
        }
        navy_templates=
        {

            {
                name="Tradeships"
                spread=10
                mercenary=no
                heavy_ship=0
                light_ship=10
                transport=0
                galley=0
            }

            {
                name="Warhips"
                spread=10
                mercenary=no
                heavy_ship=10
                light_ship=0
                transport=0
                galley=0
            }

            {
                name="Transports"
                spread=10
                mercenary=no
                heavy_ship=0
                light_ship=0
                transport=10
                galley=0
            }
        }