#26 make %cg resolve to number of board&change prefix for ob gam

[Anonymous]

This patch add a macro "%cg" which is replaced by the game number on FICS of the currently visible board, and changes the default prefix for observed game to "xw %cg" (from ",").

The advantage is that the default action for observed games will be to whisper to them. This is also useful with other commands, since now there's no need to check the number of the current board.

Notes:
a. When setting a prefix, %cg is not interpreted.
B. %cg on the console will resolve to the game number of the main board.
C. A new internationalized string is added. English is not my native language, so do check this.

--

[Nobody/Anonymous]

Patch to add %cg, and change default obs games prefix to "xw %cg"