Breaking: #64102 - Move t3-table and t3-button to bootstrap

See forge#64102

Description

In transition to full bootstrap coverage and streamlining the backend, we are dropping the support for the CSS classes .t3-table and .t3-button. We are replacing them with the corresponding bootstrap CSS classes for tables and buttons. See http://getbootstrap.com/css/#tables and http://getbootstrap.com/css/#buttons for more details.

Impact

Custom implementations of tables and buttons in backend modules will lose the TYPO3 default styling.

Affected installations

Extensions that provide custom backend modules that are using the css classes .t3-table or .t3-button.

Migration

For tables we recommend the usage of the CSS class combination table table-striped table-hover instead of t3-table.

For buttons we recommend the usage of the CSS class combination btn btn-default instead of t3-button.