Allow overriding jquery's automatic cache-busting on ajax calls

By default jQuery (and Select2) add parameters to ajax calls, to invalidate browser caching. In certain circumstances its useful to disable this (eg when server sets good Cache-Control headers), this patch allows passing the cache/jsonpCallback params though to jquery's ajax function.
Update select2.jquery.json
Estonian translation
Merge pull request #1197 from kuldarkalvik/master

Estonian translation
Merge pull request #1186 from barryhunter/patch-1

Allow overriding jquery's automatic cache-busting on ajax calls
Fixed language code for Estonian translation file [Fixes #1207]
Merge pull request #1210 from kevin-brown/fix_et

Fixed language code for Estonian translation file
Added Traditional Chinese translation

 Changes to be committed:
	new file:   select2_locale_zh-TW.js
Merge pull request #1214 from leesei/master

Added Traditional Chinese translation
add title for choice item
Merge pull request #1222 from orloffv/patch-1

add title for choice item
Galician translation
Update select2_locale_fr.js

Replace accented characters by HTML entities to avoid character set issues.
Merge pull request #1224 from unho/galician-translation

Galician translation
Merge pull request #1225 from arhakal/patch-1

Update select2_locale_fr.js
work around chrome and mutation observer bug. fixes #1099
Added Latvian translation
Merge pull request #1226 from Haran/latvian

Added Latvian translation