Update importer to use "table_prefix" everywhere
Update importer to use "table_prefix" everywhere

When importing it fails to load the prefix properly if you specify "table_prefix" because it's trying to fetch "prefix".
geerlingguy/jekyll-import,stefanw/jekyll-import,supriyantomaftuh/jekyll-import,supriyantomaftuh/jekyll-import,shybovycha/jekyll-import,ligthyear/jekyll-import,ligthyear/jekyll-import,geerlingguy/jekyll-import,geerlingguy/jekyll-import,gynter/jekyll-import,shybovycha/jekyll-import,danbernier/jekyll-import,supriyantomaftuh/jekyll-import,shybovycha/jekyll-import,jekyll/jekyll-import,danbernier/jekyll-import,jekyll/jekyll-import,danbernier/jekyll-import,cityoffortworth/jekyll-import,Teino1978-Corp/jekyll-import,stefanw/jekyll-import,Teino1978-Corp/jekyll-import,stefanw/jekyll-import,ligthyear/jekyll-import,gynter/jekyll-import,cityoffortworth/jekyll-import,gynter/jekyll-import,Teino1978-Corp/jekyll-import