It was broken, because we introduced a default namespace, which was not used by terminal methods.

* implemented logging of project and system web hooks
* implemented UI for user area (project hooks)
* implemented UI for admin area (system hooks)
* implemented retry of logged webhook
* NOT imeplemented log remover

otherwise we'll have to use `user.reload` in the specs to get the
current rss_token value.

we do this on attribute read since migrating all existing users is not a
feasible solution.

store isFetching state to indicate if assignees has initial data

Squashed commit of the following:

commit 43e5bba774e9e383dd55c665e82f6fcfc4ebfc4f
Author: Shinya Maeda <gitlab.shinyamaeda@gmail.com>
Date:   Mon Apr 17 17:28:44 2017 +0900

    Add fix

commit 09610eebdf22ad048812bb86022504b2ad917e19
Author: Shinya Maeda <gitlab.shinyamaeda@gmail.com>
Date:   Mon Apr 17 17:03:49 2017 +0900

    Add trace test

- Do not care about error when creating index on PostgreSQL
- Test against PostgreSQL 9.2

These were untested by the cherry picked commit.

Due to a typo this was not actually the case. Now that is fixed and
performance should improve because of this.