get rid of unintentional side-effect in UrlHelper#current_rss_path (closes: #278)
get rid of unintentional side-effect in UrlHelper#current_rss_path (closes: #278)

riseuplabs/crabgrass,ajturner/crisiscommons,geoiq/digitalgazette,riseuplabs/crabgrass,riseuplabs/crabgrass,adammck/crabgrass,riseuplabs/crabgrass,nilclass/echosocial,adammck/crabgrass,nilclass/echosocial,nilclass/echosocial,nilclass/echosocial,adammck/crabgrass,geoiq/digitalgazette,adammck/crabgrass,geoiq/digitalgazette,geoiq/digitalgazette,riseuplabs/crabgrass,riseuplabs/crabgrass,ajturner/crisiscommons,ajturner/crisiscommons,ajturner/crisiscommons,riseuplabs/crabgrass