rework Icons class to work with configurable icon set
add Gravatar class for handling gravatar icon creation
fix wrong parentId / id parameters
add support for free glyphicons iconset
fix count related elements
Add accordion group. This makes Contao accordion feature compatible with Bootstraps collapse plugin. Add Accordion group araound accordion content elements to let only one be opened
mode theme based templates to a subdir so that the autoload creator can be used
add comment template based on Bootstrap's media component
small adjustments to the nav_dropdown template
template for accordion group
updated config file. changes of icon settings and added accordion group element