Fixes #3656. Also adds a light grey bar when there are both 0 merged
prs/closed issues and 0 open prs/issues.

Signed-off-by: Liam Cottam <killtheidols@hotmail.co.uk>

* add topic models and unit tests

* fix comments

* fix comment

* add the UI to show or add topics for a repo

* show topics on repositories list

* fix test

* don't show manage topics link when no permission

* use green basic as topic label

* fix topic label color

* remove trace content

* remove debug function

num_watches was used where num_stars should have been used.

I wanted navigation to the page "first" and the page
"last" of the pages of commits. I discovered this
has already been implemented in one of the templates.

Signed-off-by: Tan Pheng Heong <phtan90@gmail.com>

Modify the call to ping the database to fail gracefully if the
database has not yet been configured by the end user, such as
after a clean install. This allows /healthcheck to return a 200
with a modified status message instead of causing a PANIC.

Signed-off-by: Evan Sherwood <evan@sherwood.io>

* Add size column to attachment
Migrate attachments by calculating file sizes

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Calculate attachment size on creation

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Log error instead of returning error

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* add config option to enable or disable log executed SQL

* rename ShowSQL to LogSQL

New Feature:
  * Repository struct field for IsFsckEnabled (default true of course)
  * Admin Settings section on repo options page, accessible only by
    admin users

Possible Enhancements:
  * There's no way to force running health checks on all repos
    regardless of their IsFsckEnabled setting. This would be useful if
    there were an admin API or dashboard button to run fsck immediately.

Issue: https://github.com/go-gitea/gitea/issues/1712
Signed-off-by: Allen Wild <allenwild93@gmail.com>

Why:

* We are using self-signed ssl certificates for internal services, which results in failures when gitea tries to communicate through webhooks with these. We would like to enable gitea to be able to use these certificates without having to build custom docker images.

How

* We add the internal certificates to /usr/local/share/ca-certificates on the host
* We read-only mount /usr/local/share/ca-certificates from the host to /usr/local/share/ca-certificates in the container 
* We do a update-ca-certificates in the alpine container before starting gitea

This should have no consequence for users that do not have the need to handle self-signed certificates, as update-ca-certificates should be idempotent.

* Add database migrations for merge whitelist

* Add merge whitelist settings for protected branches

* Add checks for merge whitelists

The choice regarding which forms should or should not trigger a warning
is subjective. I tried to be consistent and not warn about forms that:
 - run an action, rather than edit data: search, send an email.
 - delete data: a warning about losing data would be confusing

Note that forms on sign-in pages were already ignored (using a selector,
rather than an explicit class on the form element).

Fixes #3698.

Signed-off-by: Alex Ward <alxwrd@googlemail.com>

* Improve release page ui by adding size

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* Add documentation to a.MustSize()

Signed-off-by: Jonas Franz <info@jonasfranz.software>

Signed-off-by: Jonas Franz <info@jonasfranz.software>

Signed-off-by: Jonas Franz <info@jonasfranz.software>

* add global code search on explore

* fix bug when no anyone public repos

* change the icon

* fix typo and add UnitTypeCode check for login non-admin user

* fix ui description when no match

* Added checks for protected branches in pull requests

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Moved check for protected branch into new function CheckUserAllowedToMerge

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Removed merge conflict lines from last commit

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Explicit check for error type in ViewIssue

Signed-off-by: Christian Wulff <NChris@posteo.net>

* Add label descriptions

* Add default descriptions to label template