update pull request template with new guidelines (#402)

- use a single document for contributing guidelines, merge CONTRIBUTING.md with PULL_REQUEST_TEMPLATE.md
- use the same formatting as https://github.com/awesome-selfhosted/awesome-selfhosted, including license and language/platform
- old entries should be updated to the new format when time allows
- the guidelies are roughly the same as for awesome-selfhosted, with the following variations:
  - descriptions must be max 80 charactes long
  - do not submit your own software
  - write a short paragraph explaining why the software is awesome
  - non-free software is not allowed
  - no duplicates with awesome-selfhosted
  - no list of licenses

.github/CONTRIBUTING.md

@@ -1,23 +0,0 @@
-# Contribution Guidelines
-
-This is a compilation of **Free and Libre Open Source Software ([FLOSS](https://en.wikipedia.org/wiki/Free_and_open-source_software))**. Restrictive licenses (aka Freeware, Shareware) are *not awesome*. Please adhere to the following guidelines or your Pull Request will be closed.
-
-**Submitting your own software is not awesome**, unless you have a healthy ecosystem with a few contributors which aren't your sock puppet accounts.
-
-## Commits
-
-* Search previous suggestions before making a new one.
-* Use the following format: `[RESOURCE](LINK) - DESCRIPTION.`
-  * Keep descriptions short (<80 characters).
-  * End descriptions with a full stop.
-* Make an individual commit for each category.
-  * Order projects alphabetically.
-
-## Pull Requests
-
-* Consolidate multiple commits.
-* Use imperative (e.g. add instead of added/adding) in the PR title.
-* Include application names, categories and a link to the open source project page in the description.
-* Write a short text why the application you're adding is actually awesome.
-  * Put only stuff on the list you or another contributor can personally recommend
-  * Recommending your own software is discouraged.

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,9 +1,31 @@
-### Application name / category
-[awesometool](https://example.com) / Devops
+<!-- DO NOT DELETE THE TEXT BELOW. Please make sure relevant boxes are checked [x] -->
 
-### Source URL
-https://github.example.com/repo
+Thank you for taking the time to work on a PR for Awesome-Sysadmin!
 
-### why it is awesome
-This tool is so awesome because it allows me to do awesome things in my
-awesome corp, especially when I use it to manage awesome othersoftware.
+To ensure your PR is dealt with swiftly please check the following:
+
+- [ ] Your additions are [Free software](https://en.wikipedia.org/wiki/Free_software)
+- [ ] Software your are submitting is not your own, unless you have a healthy ecosystem with a few contributors (which aren't your sock puppet accounts).
+- [ ] Submit one item per pull request. This eases reviewing and speeds up inclusion.
+- [ ] Format your submission as follows, where `Demo` and `Clients` are optional.
+  Do not add a duplicate `Source code` link if it is the same as the main link.
+  Keep the short description under 80 characters and use [sentence case](https://en.wikipedia.org/wiki/Letter_case#Sentence_case)
+  for it, even if the project's webpage or readme uses another capitalisation.
+  `Demo` links should only be used for interactive demos, i.e. not video demonstrations.
+  ``- [Name](http://homepage/) - Short description, under 250 characters, sentence case. ([Demo](http://url.to/demo), [Source Code](http://url.of/source/code), [Clients](https://url.to/list/of/related/clients-or-apps)) `License` `Language` ``
+- [ ] Additions are inserted preserving alphabetical order.
+- [ ] Additions are not already listed at [awesome-selfhosted](https://github.com/awesome-foss/awesome-sysadmin)
+- [ ] The `Language` tag is the main **server-side** requirement for the software. Don't include frameworks or specific dialects.
+- [ ] You have searched the repository for any relevant [issues](https://github.com/awesome-foss/awesome-sysadmin/issues) or [PRs](https://github.com/awesome-foss/awesome-sysadmin/pulls), including closed ones.
+- [ ] Any category you are creating has the minimum requirement of 3 items.
+- [ ] Any software project you are adding to the list is actively maintained.
+- [ ] The pull request title is informative, unlike "Update README.md".
+  Suggested titles: "Add aaa to bbb" for adding software aaa to section bbb,
+  "Remove aaa from bbb" for removing, "Fix license for aaa", etc.
+
+
+--------------
+
+### Why it is awesome
+
+Please replace this with a short paragraph explaning why you think this software is awesome.

README.md

@@ -6,7 +6,7 @@
 
 # Awesome Sysadmin [![certified awesome!](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)
 
-**A curated list of amazingly awesome open source sysadmin resources.** Please read [CONTRIBUTING](./.github/CONTRIBUTING.md) if you wish to add software and consider [donating](https://github.com/n1trux/awesome-donations) to the FLOSS projects you use regularly.
+**A curated list of amazingly awesome Free and Open-Source sysadmin resources.** Please read the [Pull Request template](./.github/PULL_REQUEST_TEMPLATE.md) if you wish to add software and consider [donating](https://github.com/n1trux/awesome-donations) to the FLOSS projects you use regularly.
 
 * [Awesome Sysadmin](#awesome-sysadmin)
   * [Automation](#automation)