add reusable ng-enter directive to remove trailing dashes when enter is pressed
add reusable ng-enter directive to remove trailing dashes when enter is pressed

bitsuperlab/web_play,dacsunlimited/web_play,bitshares/web_wallet,bitsuperlab/web_play,bitsuperlab/web_play,dacsunlimited/web_play,bitshares/web_wallet,dacsunlimited/web_play,zhangweis/dice_web