Added 20 sets to [DGC] Collection

Previews & DDL:

	[DGC] 2014.05 No.1161 Ai Shinozaki 篠崎愛
	[DGC] 2014.05 No.1162 Kokone Sasaki 佐々木心音
	[DGC] 2014.05 No.1163 Yoko Kumada 熊田曜子
	[DGC] 2014.05 No.1164 Airi Hirayama 平山藍里
	[DGC] 2014.05 No.1165 Emiri Okazaki 丘咲エミリ
	[DGC] 2014.05 No.1166 Mei Hayama 葉山めい
	[DGC] 2014.06 No.1167 Rui Kiriyama 桐山瑠衣
	[DGC] 2014.06 No.1168 Chocolat Ikeda 池田ショコラ
	[DGC] 2014.06 No.1169 Chiaki Ohta 太田千晶
	[DGC] 2014.06 No.1170 Ayumi Ninomiya 二宮步美
	[DGC] 2014.06 No.1171 Riri Kuribayashi 栗林里莉
	[DGC] 2014.06 No.1172 Akua Otsuki 大月あくあ
	[DGC] 2014.07 No.1173 Shoko Takasaki 高崎聖子
	[DGC] 2014.07 No.1174 Sayuki Matsumoto 松本さゆき
	[DGC] 2014.07 No.1175 Mako Kadokura 門倉まこ
	[DGC] 2014.07 No.1176 Shiori Yuzuki 柚木しおり
	[DGC] 2014.07 No.1177 Aino Kishi 希志あいの
	[DGC] 2014.07 No.1178 Shizuka Nakakura 仲倉静香
	[DGC] 2014.08 No.1179 Anri Sugihara 杉原杏璃
	[DGC] 2014.08 No.1180 KONAN