Fixes #6207 Allow raw download of *.msi files

This PR also allows for download of [exe,rar,r0n,7z,7zip,zip]
Fix was originaly proposed by @MensSana
Update upgrader.md ... safety first
Add namespace for projects to docs.
Fix branches/compare butten to directly diff to default branch
Inserted spring in the binstubs

Now possible to run:
`bin/rails`
`bin/rspec`
`bin/spinach`
`bin/rake`
update copyright year to range
Add new installation methods to the readme.
Double word.
 Merge branch 'link-to-new-installation-methods' into 'master'

Link To New Installation Methods
Set initial value to Issue/MR form -> assignee selectbox

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Better English for the password reset screen.
Added broadcast message on every layout file

Fixes: #5674
Fix notification specs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'master' of dev.gitlab.org:gitlab/gitlabhq
Merge branch 'master' of github.com:gitlabhq/gitlabhq
 Merge branch 'improve/assignee_select' into 'master'

Improve assignee select

Fixes #1036. Fixes #1047
 Merge branch 'password-reset-wording' into 'master'

Password Reset Wording
Merge pull request #6346 from jvanbaarsen/fix-5674-show-broadcast-everywhere

Added broadcast message on every layout file
Merge branch 'master' of github.com:gitlabhq/gitlabhq
Merge pull request #6335 from jvanbaarsen/spring-binstubs

Inserted spring in the binstubs