Enhance gulp autoprefixer task

[webermaximilian92]

Description

• these changes remove css-prefixes that have no relevance for todays browsers anymore
• last css changes from other PR-merges were moved into scss-files to prevent them from being deleted accidently
• newest version of autoprefixer for gulp got a new recommendation for browserlist-usage, thus I moved the browserlist into package.json file and sync the new package-lock.json file

Glossary:
"css-prefixes": Fallback or beta css-rules for browsers, when new css rules are introduced
"autoprefixer": Tool that adds css-prefixes automatically
"gulp": Task script manager
"package.json": File that includes information about node packages that are required for e.g. gulp.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)

Screenshots (if appropriate):

not optical changes at all

How Has This Been Tested?

By checking the view correct changes inside cloudstack.css

[rohityadavcloud]

@webermaximilian92 cc @svenvogel - there have been several css/UI related PRs proposed recently, can you start a discussion thread on dev@ to explain what are the goals and refactorings you're trying to do. I'm personally not sure where the UI changes are heading and would like to learn more.

Typically any framework/component related changes and refactorings may have a design document to capture this that is shared with the dev community for review and discussion. Any proposals and discussions are welcome on dev@. Thanks.

[webermaximilian92]

@rhtyd
I prepared a thread which may help developers to understand what our goals for refactoring and UI are. You can find it here:
https://lists.apache.org/list.html?dev@cloudstack.apache.org
Thank you too

[rohityadavcloud]

Thanks @webermaximilian92 I'll try to follow

[rohityadavcloud]

@webermaximilian92 @svenvogel - do you think we can close this now that we have Primate?

[rohityadavcloud]

@webermaximilian92 @svenvogel - with primate in, kindly close this. Let's move all major UI development work in Primate. Thanks.

[svenvogel]

@rhtyd closed in favor of cloudstack primate development https://github.com/apache/cloudstack-primate/