Added 20 sets to [DGC] Collection

Previews & DDL:

	[DGC] 2013.07 No.1101 Ai Shinozaki 篠崎愛
	[DGC] 2013.07 No.1102 Nana Ozaki 尾崎ナナ
	[DGC] 2013.07 No.1103 Ako Itoh いとうあこ
	[DGC] 2013.07 No.1104 Risa Shiina 椎名理紗
	[DGC] 2013.07 No.1105 Tsubaki Katoh 加藤ツバキ
	[DGC] 2013.07 No.1106 Akemi Horiuchi 堀内秋美
	[DGC] 2013.07 No.1107 Saaya 紗綾
	[DGC] 2013.08 No.1108 Ayaka Noda 野田彩加
	[DGC] 2013.08 No.1109 Urara Inoue 井上うらら
	[DGC] 2013.08 No.1110 JULIA
	[DGC] 2013.08 No.1111 Sayaka Tomoda 友田彩也香
	[DGC] 2013.08 No.1112 Ai Haneda 羽田あい
	[DGC] 2013.09 No.1113 Anna Konno 今野杏南
	[DGC] 2013.09 No.1114 Yuuka Anzai 安西結花
	[DGC] 2013.09 No.1115 Yui Satoh 佐藤唯
	[DGC] 2013.09 No.1116 Ruka Kanae 佳苗るか
	[DGC] 2013.09 No.1117 Yu Namiki 並木優
	[DGC] 2013.09 No.1118 Kanae Junna 純奈かなえ
	[DGC] 2013.10 No.1119 Anri Sugihara 杉原杏璃
	[DGC] 2013.10 No.1120 Aya Satonaka 里中あや