renamed txt column to additional_comments and user_id column to author_id and updated all references to them
renamed txt column to additional_comments and user_id column to author_id and updated all references to them

git-svn-id: f67d969b640da65cb7bc1d229e09fd6d2db44ae1@255 392d7b7b-3f31-0410-9dc3-c95a9635ea79

ApertureScienceInnovators/expertiza,rmmaily/expertiza,joshio1/expertiza,KunmiaoYang/expertiza,redsock88/expertiza,kira0992/expertiza,sid5788/expertiza,urmilparikh95/expertiza,mhhassan/expertiza,ApertureScienceInnovators/expertiza,expertiza/expertiza,rmmaily/expertiza,michaelamoran/expertiza,expertiza/expertiza,urmilparikh95/expertiza,ApertureScienceInnovators/expertiza,michaelamoran/expertiza,rmmaily/expertiza,rmmaily/expertiza,kira0992/expertiza,ApertureScienceInnovators/expertiza,akshayjain114/expertiza,michaelamoran/expertiza,akshayjain114/expertiza,mhhassan/expertiza,arpitashekhar/expertiza,urmilparikh95/expertiza,KunmiaoYang/expertiza,urmilparikh95/expertiza,sid5788/expertiza,sid5788/expertiza,arpitashekhar/expertiza,akshayjain114/expertiza,sid5788/expertiza,expertiza/expertiza,redsock88/expertiza,redsock88/expertiza,joshio1/expertiza,KunmiaoYang/expertiza,kira0992/expertiza,joshio1/expertiza,redsock88/expertiza,joshio1/expertiza,expertiza/expertiza,mhhassan/expertiza,mhhassan/expertiza,akshayjain114/expertiza,arpitashekhar/expertiza,kira0992/expertiza,arpitashekhar/expertiza,KunmiaoYang/expertiza,michaelamoran/expertiza