[locale] pt: Fix capital letters in weekdays

[horus68]

In Portuguese (Portugal) weekdays are in lowercase. So its required that working days will be like Segunda-feira not as the actual value Segunda-Feira

For those on grammar:
Even the first capital letter is only Ok when in a single word or the first word in a sentence. Regular usage (in the middle of a sentence) it would be all in lowercase.
But we can't control here when it will show one way or the other, so the initial capital letter!

Reference: https://ciberduvidas.iscte-iul.pt/consultorio/perguntas/meses-e-dias-da-semana-outra-vez/3743

[jsf-clabot]

All committers have signed the CLA.

[ichernev]

@jalex79 what do you think

@horus68 you need to update tests in src/test/locale/pt.js.

[horus68]

@ichernev done

[marwahaha]

@horus68 - there's a small conflict - could you resolve it?

[horus68]

@marwahaha I tried to fix the conflict but now Travis failed.
I don't have the knowledge to fix this!

Note: "Allow edits from maintainers" its active if you have the time

[marwahaha]

I made a change @horus68 - it looked like one test got adjusted. A few thoughts:

• do we have confirmation from @jalex79 ?
• should all months be lowercase, also?
• should Saturday and Sunday be lowercased?

[jalex79]

In the middle of a sentence, the names of the days of the week are in lower case (domingo, segunda-feira, ..., sábado). But in bonds, and obviousness, at the beginning of sentences, is capitalized. The same thing to the names of the months.

[marwahaha]

Ok, great.

@horus68 / @jalex79 , last question:

• If Months and days of the week are treated similarly, should they all be lowercase?
  For example, like this. https://github.com/moment/moment/blob/develop/src/locale/lt.js#L52-L60

[marwahaha]

Ok, I will merge it as is.