* Draft the new maintainer guide

* Maintainer guide - Apply suggestions from code review

Co-Authored-By: Raihaan Shouhell <raihaanhimself@gmail.com>
Co-Authored-By: Tim Jacomb <t.jacomb@kainos.com>
Co-Authored-By: Daniel Beck <1831569+daniel-beck@users.noreply.github.com>

* Apply suggestions from code review

Co-Authored-By: Jeff Thompson <37345299+jeffret-b@users.noreply.github.com>
Co-Authored-By: Francisco Fernández <31063239+fcojfernandez@users.noreply.github.com>

* Maintainer guide - Replace the first role by "contributor"

* Maintainer guide - Add more details

* Maintainer guide - address some feedback

* Apply suggestions from code review by @daniel-beck

Co-Authored-By: Daniel Beck <1831569+daniel-beck@users.noreply.github.com>

* Update .github/PULL_REQUEST_TEMPLATE.md

Co-Authored-By: Daniel Beck <1831569+daniel-beck@users.noreply.github.com>

* Maintainer guide - more updates

* Maintainer Guide: Add info about the Security Releases and merges + add an explicit Jenkins LTS section

Addresses comments from @daniel-beck and @olivergondza

* Maintainer guide: reference the advisories

* Apply suggestions from code review

Co-Authored-By: Mark Waite <mark.earl.waite@gmail.com>
Co-Authored-By: Raihaan Shouhell <raihaanhimself@gmail.com>
Co-Authored-By: Daniel Beck <1831569+daniel-beck@users.noreply.github.com>

* Apply suggestions from code review

Co-Authored-By: Mark Waite <mark.earl.waite@gmail.com>

* Fix typos

* Expand code review goals: documentation and code styles

* Maintainer guide: Document the squash-merge policy

* Apply suggestions from code review

Co-Authored-By: Mark Waite <mark.earl.waite@gmail.com>

Co-authored-by: Raihaan Shouhell <raihaanhimself@gmail.com>
Co-authored-by: Tim Jacomb <t.jacomb@kainos.com>
Co-authored-by: Daniel Beck <1831569+daniel-beck@users.noreply.github.com>
Co-authored-by: Jeff Thompson <37345299+jeffret-b@users.noreply.github.com>
Co-authored-by: Francisco Fernández <31063239+fcojfernandez@users.noreply.github.com>
Co-authored-by: Mark Waite <mark.earl.waite@gmail.com>

* Updating LICNESE section of readme.md

* Changing raw to blob in the LICENSE link.

* Add Latest release and Docker shields to README

* Use Jenkins update center as an information source

* Use Jenkins endpoits and HTTPs

* Change the badge color to retrigger CI

* Reference redirectors and jenkins.io as much as possible

* Something went wrong, so this is a troubleshooting URL

* More specific redirect URLs

Next steps will be modifying the URL when jenkins.io is ready.

https://github.com/blog/1184-contributing-guidelines

Signed-off-by: Kamran Mackey <kamranm1200@gmail.com>

Signed-off-by: Kamran Mackey <kamranm1200@gmail.com>

Minor changes are always good.

Signed-off-by: Kamran Mackey <kamranm1200@gmail.com>

Remove extra lines under each title heading (forgot to add in previous commit).

Fix grammatical/spelling errors. Paste in copy of MIT License with recommended copyright format.

Removed an extra 'of' in line#5 to fix the sentence structure.
BEFORE: 'and a number of other "of" contributors
PROPOSED: and a number of other contributors

The goals is to maintain the information about the provided plugins near to the one showed on jenkins-ci.org home.

The number of provided plugins was outdated.