Remove unneeded cruft from base invitable serializer
Remove unneeded cruft from base invitable serializer

gvalerin/loomio,mlarghydracept/loomio,sicambria/loomio,loomio/loomio,Collabforge/site-collabio,mhjb/loomio,gvalerin/loomio,labhackercd/loomio,FSFTN/Loomio,mhjb/loomio,isomerase/loomio,doomergithub/loomio,Collabforge/site-collabio,wangjun/loomio,isomerase/loomio,HadoDokis/loomio,tachyons/loomio,digideskio/loomio,juliagra/DBCloomio,annewchen/loomio,juliagra/loomio,mlarghydracept/loomio,HadoDokis/loomio,piratas-ar/loomio,loomio/loomio,codingnutty/loomio,kimihito/loomio,digideskio/loomio,mhjb/loomio,loomio/loomio,sicambria/loomio,codingnutty/loomio,annewchen/loomio,juliagra/loomio,loomio/loomio,juliagra/DBCloomio,FSFTN/Loomio,wangjun/loomio,kimihito/loomio,doomergithub/loomio,wangjun/loomio,juliagra/DBCloomio,doomergithub/loomio,Collabforge/site-collabio,HadoDokis/loomio,digideskio/loomio,tachyons/loomio,Collabforge/site-collabio,sicambria/loomio,FSFTN/Loomio,aca13jmf/loomio,labhackercd/loomio,labhackercd/loomio,mlarghydracept/loomio,kimihito/loomio,labhackercd/loomio,isomerase/loomio,aca13jmf/loomio,aca13jmf/loomio,isomerase/loomio,codingnutty/loomio,tachyons/loomio,juliagra/loomio,piratas-ar/loomio,gvalerin/loomio,annewchen/loomio,mhjb/loomio,piratas-ar/loomio,piratas-ar/loomio,HadoDokis/loomio,sicambria/loomio,tachyons/loomio,FSFTN/Loomio