* correct links in test-guidelines.md (issue #1665)
added specific links for PesterDoAndDont and WritingPesterTests
added new section in WritingPesterTests.md on bulk skipping tests
* update test directories to include a directory for remoting tests
* fix lines in document to use semantic line breaks
also remove trailing spaces after "."
* Remove PR template, update guidelines for PR
* Update testing-guidelines.md
* Add clarification on when to use runtime/compiletime checks
* Update issue label descriptions
Changing OPS to PowerShell.
Changing "PowerShell in Windows" to "Windows PowerShell".
Removing a duplicate line "test/powershell/Modules/Microsoft.PowerShell.Security".
Fixing a bunch of typos.