[BUGFIX] Remove last comma in ext_tables.sql

After the last field declaration there is a comma, which is not allowed in sql files

This patch removes the last comma
[TASK] Remove file changes check in ext_emconf.php

In ext_emconf.php there is a value called md5_values_when_last _written. This is not needed anymore

This patch removes the value
[BUGFIX] Plugins not displayed properly

Plugins (tt_content.list.20.{pluginName}) are called, but don't receive any data from the content object.

This patch adds the data parameter to the Fluid view helper cObject which passes the content objects data