Minor typo in en-US locale: gloabl -> global

Fix postinstall to use GOGS_CUSTOM instead of symlinking

Reword messages for PR auto merging (#2117)

LOCAL_ROOT_URL for workers accessing web service

The reasoning for that is in the previous commit.

Local (DMZ) URL for gogs workers (such as ssh update) accessing web service. In
most cases you do not need to change default http://localhost:HTTP_PORT/. You
may need to alter it only if your ssh server node is not the same as http node,
eg. running behind proxy on different node than web server.

                     --- 80 public port -> 8080 -- web server node
                    /
    public proxy --<
                    \
                     --- 22 public port -> 10022 -- ssh server node

This option is not intended to be accessible via web GUI settings, since it is
unlikely someone needs to change it to somethings else than default
http://localhost:HTTP_PORT/ which should work for most of the cases.

But this should land into the documentation somewhere.

fixup

LDAP parameters UI: bind_dn and bind_password are not required

gogs: add import that lets gogs run as a stand-alone windows service

Updates #630

Makefile: Do not fail build on missing lessc

This is achieved by adding public/css/gogs.css to special .IGNORE target, which
makes inability to generate/update gogs.css non-fatal and not stopping whole
build process. User is still notified about missing lessc command though, since
inability to update CSS may lead to potential problems:

    lessc public/less/gogs.less public/css/gogs.css
    make: lessc: No such file or directory
    make: [public/css/gogs.css] Error 1 (ignored)

More info at:

  https://www.gnu.org/software/make/manual/html_node/Special-Targets.html

Dropdown on commits page to choose branch #1846

We only handle branch selection for repo home and commits pages, so the
redirection URL is based on PageIsCommits

I've mostly duplicated the dropdown code from repo/home.tmpl, which
basically only required a change to the URL. This could probably be
broken out into something more modular.

Only show comparison link for >2 commits, fixes #1110

We can look at the PushCommits object to see how many commits were
included in a commit, and add some template logic to only show the
comparison link when there are at least 2 commits in a push. We also
correct the link to display the number of commits.

Allow pre-receive hook customization

This hook can be used for example to reject too large commits and it is
executed before "update" hook, used exclusively by Gogs to update its state.

https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks

Consistent tab indentation for all source files

This commit improves templates readability, since all of them use consistent
indent with all template command blocks indented too.

1. Indents both HTML containers such as <div>, <p> and Go HTML template blocks
   such as {{if}} {{with}}

2. Cleans all trailing white-space

3. Adds trailing last line-break to each file

This does not change any content and generated gogs.css is still the same.

Update Russian translation