[backend] fix BSRPC noproxy handling

[webui] Fix tests and update redirect after failed login attempts

* Add test for failed logins.
* Update and rename test for login form.
* Redirect after failed logins instead of using render.
  Since do_login action was called via POST rendering a view here lead to the wrong
  impression that /user/do_login is a valid path for a GET request. Doing a redirect
  prevents this from happening.

Backport 1608

another test case is triggering a build of BaseDistro3 package.
ensure that the submitted build result matches with current sources

Backport from master cfd2a1f2

Added remarks from bgeuken:
- removed the comment
- call user_login_page directly
- test if current page is really home

If a user enters wrong credentials in login widget and he gets redirected to /user/do_login.
If login happens with correct credentials now the user is logged in but stays on the page and sees the login form again in master, or gets an 404 in 2.6.

Now he gets redirected into home if the user comes from the login page.

fixes #1557

Conflicts:
	src/api/app/controllers/webui/user_controller.rb
	src/api/test/functional/webui/user_controller_test.rb

Fixes issue #852.

[dist] Updating ReleaseNotes-2.6.9

Fixes repo path

Fixes: https://github.com/openSUSE/open-build-service/issues/923

[dist] Update ReleaseNotes

[webui, api] Update rails to version 4.1.14.2

to update possible CVE-2016-2097 and CVE-2016-2098

Gem update

to fix CVE-2014-7819

to fix CVE-2015-1840

to fix DoS CVE-2015-3225

Update ReleaseNotes for 2.6.8

Fix redirect in 2.6

We don't want to lose the events!

This provides a redirect url which IChain can use to properly redirect to OBS.
Otherwise this would always redirect to the main page.