Retest and unify all devfiles with samples

[sparkoo]

Is your task related to a problem? Please describe.

We have ~20 devfiles with samples and it is the first thing that new user will probably try and see in Che, thus user experience here is critical. Along the way of creating these devfiles, several issues were created and fixed (#13796, #13823, #13592, and probably more). These might cause new issues in already merged devfiles.

Describe the solution you'd like

After all agreed devfiles are merged #13529, we should retest them all, unify them (names, descriptions, tasks) and address all user experience issues. User experience must be as smooth as possible.

Describe alternatives you've considered

do nothing

Additional context

this is follow-up of #13529

[l0rd]

This issue doesn't look like a "new issue" but rather as a subtask of #13529 that you would like to include in 7.0.0. Is it correct @sparkoo?

[sparkoo]

@l0rd I thought of it as a follow-up task. But might be a subtask as well.
I'd like to include this to 7.0.0 as I believe user experience here is critical. However, I'd like to hear yours and others opinion, whether it is really needed to do.

[sparkoo]

I've identified several issues.

• Hit already reported issues Add postload actions in devfile #13862, Theia Omnisharp Plugin doesn't detect new projects  #13739, Fix samples endpoint issues #13964
• Reported few generic ones Debug>Start with no debug configurations gives no feedback to the user #14006, Theia tasks are listed in random order #14000
• java-mysql Java-MySQL devfile built app does not work #13938 (comment)
• java apache camel - "Apache Camel" devfile debug task does not work #14003 and JLS Java Language Server takes eternity to load Apache Camel devfile project #14004
• Go Go sample can't run files without task #14007
• Nodejs mongo nodejs-mongo devfile sample issues #14009
• php-laravel php-laravel devfile sample should be simplified #14010
• php apache php devfiles Stop Apache Web Server gets error #14011

I'm closing this task, problems should be solved in particular issues.