Update README and clarify licensing

Change-Id: I253c6f7b3e7959d47bdbb34b4f246cf01c5677f7
Merge "Update README and clarify licensing"
Localisation updates from https://translatewiki.net.

Change-Id: I686527db43edc9e018f0c216b231dc4a4138bb6f
Localisation updates from https://translatewiki.net.

Change-Id: I2ce4e267757dde41bf5d018e4da2037502a51f6b
Localisation updates from https://translatewiki.net.

Change-Id: Ide4cb78487bcb79d97a9f030c4469e7245404f44
Localisation updates from https://translatewiki.net.

Change-Id: I4b517545292164c48ec22641f6cac46779d84925
Localisation updates from https://translatewiki.net.

Change-Id: If1f8cdaa4c26db3f69fe0c1626637cc35476ba91
i18n: consistency tweaks

* Name should not be title-case
* Add full-stop

Spotted by Siebrand
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Pronunciationrecording/en
https://translatewiki.net/wiki/Thread:Support/About_MediaWiki:Pronunciationrecording-upload-publish-failed/en

Change-Id: I0a507e57cbf714f57994969ccc86e27a070dd00e
Localisation updates from https://translatewiki.net.

Change-Id: Id8784ce128e8328a175f31b419ecff6b35bde0a3
Replace usage of SpecialPage::getTitle with getPageTitle

Was deprecated in 1.23, see Icdcf5d5295ef5e7f08b1d403e0c123f78738fd40

Change-Id: Ie41173e5248867ea08a297c353552ad8bb214cd6
Localisation updates from https://translatewiki.net.

Change-Id: Ic2642009529a06d5e7e72e4c9005802e3aaee2d1
Merge "Replace usage of SpecialPage::getTitle with getPageTitle"
Localisation updates from https://translatewiki.net.

Change-Id: I85eab63779c104f4de1bc8dc13011ed5b8a79e18
Localisation updates from https://translatewiki.net.

Change-Id: Ib600803bcb91643a8aedb59aaf1d2f8e1f2074dc
Localisation updates from https://translatewiki.net.

Change-Id: Ie8661e1b5d8bc122b47934fe7fdf24cd60c26ab4
Localisation updates from https://translatewiki.net.

Change-Id: If19810d16a87fa47d617d71615fe463a79fc3750
Localisation updates from https://translatewiki.net.

Change-Id: I1a4feb617866ee3131968e3526f8d2cc515610b2
Localisation updates from https://translatewiki.net.

Change-Id: I34c247936c74a44300fe21a9c66047f459ae68f3
Note dual license for JavaScript

Change-Id: I5b27bd5e74b2d0adeaaaea6505503a4b644669a2
Localisation updates from https://translatewiki.net.

Change-Id: I549a75e73b2af51bee8f8bf5b1311b8ac37a83a9