Embedded fieldsets for FreistilBox- and .htaccess-settings and ajax callback. Unfortunately hey don't work.
Repaired conditions for displaying or hiding fields regarding to state of checkboxes.
Renamed field 'field_fse_ref_webserver' and renamed entity 'server' in comments.
Renamed entity type 'server' into 'webserver'.
Added fields, field instances and fieldcollection for SOLR.
Fixed two bugs in creating new fields for SOLR.
Finalized and tested implementation of solr field.