Starwels Fork

Fix spellings of GitHub

Remove unnecessary changes

Fix GitHub spelling on doc/translation_process.md

Just a quick run through some docs and fixing some text errors.

- Add new translations (finally, after a long time)
- update-translation script was not considering new translations - oops
  - fixed this, also remove (nearly) empty translations
- Update translation process, it was still describing the old repository
  structure

- OSX —> OS X
- XCode —> Xcode
- github —> GitHub
- homebrew —> Homebrew
- gitian —> Gitian
- Other miscellaneous obvious spelling fixes and whitespace removal

Split off Bitcoin Core project development discussion from the general
Bitcoin development channel.

Qt changed to Bitcoin Core

Run this script from the root of the repository to update all translations from transifex.
It will do the following automatically:

- create a transifex configuration file
- fetch all translations
- post-process them into valid and committable format

This is a project-wide configuration file and should be the same for
everyone.
Also remove mention of creating it yourself from the translation process.

Update current translations, and add new languages:

- es_MX: Spanish (Mexico)
- pam: Kapampangan

Also update translation process for autoconf-based build system.

Also clarify translation process that the package `gettext` is needed to run string extractor.

- No core strings changed since last time
- Re-add line numbers in .ts file as this is marginally easier for translators (see #1227)

- add part for handling of plurals
- update Transifex links
- small misc changes