Resolve "Supprimer la dépendence directe sur symfony/symfony"

Closes #3 (closed)

composer.json

@@ -26,22 +26,38 @@
     ],
     "require": {
         "php": "^7.1",
-        "ext-json": "^1.5",
+        "ext-intl": "*",
+        "ext-json": "*",
         "blueimp/jquery-file-upload": "~9.9",
         "doctrine/doctrine-bundle": "^1.6",
         "doctrine/orm": "^2.5",
-        "irstea/theme-bundle": "^2.0@dev",
+        "irstea/theme-bundle": "^2.0",
         "knplabs/gaufrette": "^0.3",
         "knplabs/knp-gaufrette-bundle": "~0.1",
         "pagerfanta/pagerfanta": "^1.0",
         "psr/log": "^1.0",
         "ramsey/uuid": "^3.0",
         "ramsey/uuid-doctrine": "^1.5",
-        "sensio/framework-extra-bundle": "^3.0.2",
+        "sensio/framework-extra-bundle": "^3.0",
         "symfony/assetic-bundle": "^2.3",
-        "symfony/intl": "^3.3",
-        "symfony/monolog-bundle": "^3.1.0",
-        "symfony/symfony": "^3.0",
+        "symfony/config": "^3.0",
+        "symfony/console": "^3.0",
+        "symfony/dependency-injection": "^3.0",
+        "symfony/doctrine-bridge": "^3.0",
+        "symfony/event-dispatcher": "^3.0",
+        "symfony/form": "^3.0",
+        "symfony/framework-bundle": "^3.0",
+        "symfony/http-foundation": "^3.0",
+        "symfony/http-kernel": "^3.0",
+        "symfony/intl": "^3.0",
+        "symfony/monolog-bundle": "^3.0",
+        "symfony/options-resolver": "^3.0",
+        "symfony/routing": "^3.0",
+        "symfony/security": "^3.0",
+        "symfony/templating": "^3.0",
+        "symfony/translation": "^3.0",
+        "symfony/twig-bridge": "^3.0",
+        "symfony/validator": "^3.0",
         "twig/extensions": "^1.0",
         "twig/twig": "^1.0||^2.0",
         "white-october/pagerfanta-bundle": "~1.0",
@@ -49,6 +65,7 @@
         "xenolope/quahog": "^2.1"
     },
     "require-dev": {
+        "ext-pcov": "*",
         "hexmedia/yaml-linter": "^0.2",
         "irstea/composer-require-checker-shim": "^2.0",
         "irstea/php-cs-fixer-config": "^1.0",