playlists management support and playlist editor screen added

doc/ncmpcpp_keys

@@ -35,6 +35,8 @@
 #
 #key_volume_down = 260 '-'
 #
+#key_toggle_space_mode = 't'
+#
 #key_screen_switcher = 9
 #
 #key_help = '1' 265
@@ -47,6 +49,8 @@
 #
 #key_media_library = '5' 269
 #
+#key_playlist_editor = '6' 270
+#
 #key_stop = 's'
 #
 #key_pause = 'P'
@@ -93,6 +97,8 @@
 #
 #key_deselect_all = 'V'
 #
+#key_add_selected_items = 'A'
+#
 #key_clear = 'c'
 #
 #key_crop = 'C'

doc/ncmpcpprc

@@ -80,7 +80,9 @@
 #
 #repeat_one_mode = "no"
 #
-#find_mode = "wrapped"
+#default_find_mode = "wrapped"
+#
+#default_space_mode = "add"
 #
 #header_visibility = "yes"
 #
@@ -110,5 +112,5 @@
 #
 #statusbar_color = "default"
 #
-#library_active_column_color = "red"
+#active_column_color = "red"
 #