RA-2020: Fix auto update of translations from transifex

[jona42-ui]

RA-2020: Fix auto update of translations from transifex

Description

changed the .tx/config file within each codebase to match the following:

 [main]
host = https://www.transifex.com/

[o:openmrs:p:OpenMRS:r:xxxxxxx]
source_file = api/src/main/resources/messages.properties
source_lang = en
file_filter = api/src/main/resources/messages_<lang>.properties
type = UNICODEPROPERTIES 

Where "xxxxxxx" would be replaced with the name of the resource slug in Transifex

Related Issue

see https://issues.openmrs.org/browse/RA-2020

Checklist:

• My pull request only contains one single commit.
• My pull request is based on the latest master branch
  git pull --rebase upstream master.
• I ran mvn clean package right before creating this pull request and
  added all formatting changes to my commit.
• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[mseaton]

LGTM, this seems to match what is in place in the registrationapp module, which I used for reference here, as well as the specifications from the ticket. No idea if this is actually used in transifex or not...