/********** 11-03-13 **********/
* fix crash in input helper if mc/player happened to be null
* fix civic builder needing op status to use.  would prevent use in true
SSP/SMP games (but would work fine if started in creative and swapped to
survival)
* open up config option to adjust delay for cross-dimensional mail
* fix NPE on interaction with a TECivic that had a null inventory
* fix validation on gate placement to test for air blocks instead of
blockID==0, should help with cases of RC phantom blocks obstructing gate
construction