- prevent overflow for ampere values > 65A - transmit with 1unit==0.1A --> gui needs adaption
- gui adaption to amperage resolution
+ compute watts and maximum watts



git-svn-id: http://multiwii.googlecode.com/svn/trunk/MultiWiiConf_shared@1681 02679b44-d973-9852-f2fa-63770883b36c