Add new translation tool

translationtool/.gitignore

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+vendor
+composer.phar
+.vscode

translationtool/Makefile

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+.PHONY: translationtool.phar
+
+translationtool.phar: install-composer-deps
+	php -d phar.readonly=off vendor/bin/phar-composer build src
+	chmod +x translationtool.phar
+
+install-composer-deps: composer.phar
+	php composer.phar install
+	php composer.phar install -d src
+
+composer.phar:
+	curl -sS https://getcomposer.org/installer | php
+
+clean:
+	rm -f translationtool.phar composer.lock src/composer.lock
+	rm -rf vendor src/vendor

translationtool/README.md

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+# Nextcloud translation tool
+
+This tool is used to extract translatable texts from the source code and to create translation files that can be used by Nextcloud.
+
+## Generating PO files
+
+To extract the texts from the source code and create a pot file simply go to the folder of your app and run
+`php /path/to/translationhelper.phar create-pot-files`. Now the script will create a folder called *translationfiles* 
+and put the generated pot file in there. One pot file will be created for each app.
+
+You'll find the pot files in *translationfiles/templates/$app.pot*
+
+## Generating Nextcloud files
+
+Once you have the translated po files under *translationfiles/$lang/$app.po* you can create the js and json files used by Nextcloud.
+To do so run `php /path/to/translationhelper.phar convert-po-files`. The files are then put in the *l10n* folder of the apps.

translationtool/composer.json

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+{
+	"name": "nextcloud/translationtool",
+	"description": "Needed for the translation tool",
+	"license": "MIT",
+	"config": {
+		"vendor-dir": "vendor",
+		"optimize-autoloader": true,
+		"classmap-authoritative": true
+	},
+	"require": {
+		"clue/phar-composer": "^1.0"
+	}
+}