Search query is especially slow if a user searches a generic string
which matches many records, in such case search can take tens of
seconds or time out. To speed up the search query, we search only for
first 1000 records, if there is >1000 matching records we just display
"1000+" instead of precise total count supposing that with such amount
the exact count is not so important for the user.

Because for issues even limited search was not fast enough, 2-phase
approach is used for issues: first we use simpler/faster query to get
all public issues, if this exceeds the limit, we just return the limit.
If the amount of matching results is lower than limit, we re-run more
complex search query (which includes also confidential issues).
Re-running the complex query should be fast enough in such case because the
amount of matching issues is lower than limit.

Because exact total_count is now limited, this patch also switches to
to "prev/next" pagination.

Related #40540

Sets `autocomplete=off` to issuable filtered serarch.

The list of attributes for the filtered search input was getting long, so use a
helper method to fill that hash.

Also, for multiple issue assignees, a helper is more convenient because it would
allow EE to override the behavior if MIA is supported.

Use the EnforcedStyleForMultiline: no_comma option.

Signed-off-by: Rémy Coutable <remy@rymai.me>

This reverts commit cb10b725c8929b8b4460f89c9d96c773af39ba6b.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This controller is going to contain both the project members and groups options
for the settings gear.

Generated the route and modified the routing to point to the new members setting path

Truncato is introduced as a dependency to intelligently shorten the rendered
HTML to 200 characters; the previous approach could have resulted in invalid
HTML being rendered.

permissions/permissions just links to user/permissions since
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5210

This reverts commit 3e991230.

# Conflicts:
#	app/models/project.rb

Changed some variable names
Fixed CHANGELOG entry

Correct search results count