자동 로그인
자동 로그인 및 로그 아웃 구현
사용자 초대 이미지 보이기
그룹 생성 : 사용자 검색 & 사용자 그룹에 추가.
내 그룹 리스트 가져오기.
일단 집에 갑시다.
수정한 건 별로 없음~
.apt_generated 삭제
Merge branch 'master' into newmaster

Conflicts:
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/DoneFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/InProgressFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/MyWorksFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/ToDoFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/kanban/DoneFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/kanban/InProgressFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/kanban/MyWorksFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/kanban/ToDoFragment_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/login/LoginActivity_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/login/SignupActivity_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/project/ProjectInvitationActivity_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/project/ProjectSelectionActivity_.java
	Coco-nut/.apt_generated/com/egoists/coco_nut/android/project/ProjectSelectionFragment_.java