Cleanup CLI includes across all components

* Remove unused include files
* Move includes out of widely shared headers (reduced rebuild time)
* Consolidate code for Analyze command

src/cli/RemoveGroup.cpp

@@ -15,18 +15,12 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <cstdlib>
-#include <stdio.h>
-
 #include "RemoveGroup.h"
 
-#include "cli/TextStream.h"
-#include "cli/Utils.h"
-#include "core/Database.h"
-#include "core/Entry.h"
+#include "TextStream.h"
+#include "Utils.h"
 #include "core/Group.h"
 #include "core/Metadata.h"
-#include "core/Tools.h"
 
 RemoveGroup::RemoveGroup()
 {