Fix a bug where user data broken after saving profile - change deprec…

…ated response.json() to response.data.

Update PHP packages.

Update laravel-elixir-vue to laravel-elixir-vue-2, and other NPM pack…

…ages.

Fix a bug where moving a task to new stage, the task in old stage was not removed.

Fix a bug where error occurred in filtering teammates who have no designation.

Make profile photo responsive.

Add screenshot to readme.