Added 20 sets to [DGC] Collection

Previews & DDL:

	[DGC] 2014.11 No.1201 Nami Hoshino 星野ナミ
	[DGC] 2014.11 No.1202 Runa Amamiya 雨宮留菜
	[DGC] 2014.12 No.1203 Mizuki Hoshina 星名美津紀
	[DGC] 2014.12 No.1204 Ayaka Sayama 佐山彩香
	[DGC] 2014.12 No.1205 Anna Konno 今野杏南
	[DGC] 2014.12 No.1206 Shiori Kawana 川奈栞
	[DGC] 2014.12 No.1207 Syoko Akiyama 秋山祥子
	[DGC] 2014.12 No.1208 Ayana Nishinaga 西永彩奈
	[DGC] 2015.01 No.1209 Anri Sugihara 杉原杏璃
	[DGC] 2015.01 No.1210 Mai Sasaki 佐々木麻衣
	[DGC] 2015.01 No.1211 Manami Hashimoto 橋本マナミ
	[DGC] 2015.01 No.1212 Chie Itoyama 糸山千恵
	[DGC] 2015.01 No.1213 Yui Tatsumi 辰巳ゆい
	[DGC] 2015.01 No.1214 Satoko Hirano 平野聡子
	[DGC] 2015.02 No.1215 Yuna Shirakawa 白河優菜
	[DGC] 2015.02 No.1216 Arie Ikeda 池田愛恵里
	[DGC] 2015.02 No.1217 Mikuru Uchino 内野未来
	[DGC] 2015.02 No.1218 Nana Kasai なな日和
	[DGC] 2015.02 No.1219 Minori Hatsune 初音みのり
	[DGC] 2015.02 No.1220 Chika Kitami 北見千賀