Spelling fixes and typos

[brianteeman]

Big batch of spelling and typos fixed according to style guide (99% are in comments and doc blocks)
https://joomla.github.io/user-interface-text/?user-interface-text/words2watch.md

[jeckodevelopment]

I have tested this item ✅ successfully on #11295
Good job @brianteeman

[brianteeman]

@jeckodevelopment Luca its best not to add the milestone until its marked RTC ;)

[RonakParmar]

I have tested this item ✅ successfully on 5302513

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[alikon]

I have tested this item ✅ successfully on 5302513

code review

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[sonalitailored]

I have tested this item ✅ successfully on 5302513

I have tested this item successfully

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[rdeutz]

@brianteeman could you have a look at the merge conflicts, thanks.

[brianteeman]

@wilsonge @rdeutz i tried to resolve conflicts but i just made it worse and reverted my attempt

[rdeutz]

I tried to merge it but after fixing the conflicts I have seen that some changes recently made are overwritten e.G. travis.yml and the merge will delete the /tests/unit/unit.test.sh what is wrong. Maybe someone else can give it a try. One suggestion for future PR's, don't make PR's with 500+ files, when you can't be sure it gets merged very soon.

[brianteeman]

When I made it I had hoped it would get merged quickly! Plus the TT insisted I should do one big change and not lots of little ones. Can't win :) Thanks for trying. If @wilsonge can't do it I can do it again as I have the notes still

[brianteeman]

creating a new pr - should be quicker

[brianteeman]

@zero-24 thanks for trying ;(

[zero-24]

please give me one more try.

[brianteeman]

woohoo!!!

Thanks @zero-24

@rdeutz this should be ready to merge now

[andrepereiradasilva]

722 files changed??

[brianteeman]

Maybe I should continue with me redo of this PR - I am 50% there

[zero-24]

hmm sorry that it don't work @brianteeman :(

[brianteeman]

Closed - please try the redo #11604