Issue notification
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This reverts commit 4c2c5fbb4b16e14b5bbdf6c1f72c6586e1a92fbe.

For v1.10.0

Signed-off-by: Suwon Chae

See: Yona Github issue #374

See: Yona Github issue #393

See: Yona Github issue #396 #395

- remove image shadow
- remove image border (only in README)
- add bottom line of H2 header

See: Yona Github issue #402

- it is based on id and password
- it returns token for http request
- functions for checking http header token and for getting user by token

This reverts commit f8e0cf80b526da3839430398f4c940bb5b458d82.