ホスト変更機能実装

See merge request !122

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[iOS] チャットルームのネームカードからグループに遷移する処理を実装

See merge request !125

Origin/release sp3 ios collaboration document

See merge request !124

# Conflicts:
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Develop #414 board collaboration

See merge request !126

Merge branch 'develop' of gitlab.agentec.jp:abookCommunication/chat_webview into develop_#414_board_collaboration

# Conflicts:
#	public_new/js/share.js

Features/release sp3 collaboration document

See merge request !120

Merge commit '4f062177' into origin/release_sp3_ios_collaboration_document

# Conflicts:
#	public_new/js/share.js

# Conflicts:
#	public_new/js/share.js

Merge branch 'develop' of gitlab.agentec.jp:abookCommunication/chat_webview into features/release_sp3_collaboration_document

# Conflicts:
#	public_new/js/share.js

Merge commit '239d9c72' into origin/release_sp3_ios_collaboration_document

Refactoring/host chage proposal

See merge request !119

メッセージタイプ変数名修正

See merge request !117

Features/release sp3 collaboration document

See merge request !115

Release sp3 white board collaboration

See merge request !116

Merge branch 'release_sp3' of gitlab.agentec.jp:abookCommunication/chat_webview into features/release_sp3_collaboration_document

# Conflicts:
#	public_new/js/share.js