remove browse plugin from externals - we're using built in 'members' now

plugins/old_plugins/browse/index.php

plugins/old_plugins/browse/languages/en.php

plugins/old_plugins/browse/manifest.xml

plugins/old_plugins/browse/prospective.php

plugins/old_plugins/browse/start.php

plugins/old_plugins/browse/views/default/browse/user.php

...lugins/browse/views/default/widgets/browsewidget/edit.php

...lugins/browse/views/default/widgets/browsewidget/view.php

plugins/old_plugins/everybody/index.php

plugins/old_plugins/everybody/languages/en.php

plugins/old_plugins/everybody/start.php

...ns/old_plugins/everybody/views/default/everybody/user.php