CSS classes in RTE with tables, e.g for Bootstrap. For more details read this german blog post http://blog.chriwo.de/post/162161526488/bootstrap-tabellen-klassen-im-rte

PageTSconfig.txt

RTE.default {
    contentCSS = your-path/rte.css
    buttons {
        blockstyle {
            tags.table.allowedClasses := addToList(striped,bordered,hover,condensed)
        }
    }
    proc {
        allowedClasses := addTolist(striped,bordered,hover,condensed)
    }
}

rte.css

table.hover {background-color:transparent;}
table.bordered {border: 1px solid #ddd;}
table.striped {background-color:transparent;}
table.condensed tr td,
table.condensed tr th {padding: 5px;}

setup.txt

lib.parseFunc_RTE.externalBlocks {
    table {
        stdWrap {
            HTMLparser.tags.table.fixAttrib.class {
                list := addToList(hover,striped,bordered,condensed)
                always = 1
                prefixRelPathWith = table table-
            }
            wrap = <div class="table-responsive">|</div>
        }
    }
}