added 16 commits

• cf1c8b9e...2fc3ca18 - 15 commits from branch develop
• 715f095d - Merge branch 'develop' of gitlab.agentec.jp:abookCommunication/chat_webview into…

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marked the task @miura-t as completed

assigned to @kang-dh

assigned to @kim-p

marked the task @kim-p as completed

assigned to @lee-mk

merged

mentioned in commit 9f1389a6