Update app's level

apps.json

@@ -443,6 +443,7 @@
     },
     "compteur_du_gase": {
         "category": "office",
+        "level": 7,
         "state": "working",
         "url": "https://github.com/YunoHost-Apps/compteur_du_gase_ynh"
     },
@@ -544,6 +545,7 @@
     },
     "cypht": {
         "category": "communication",
+        "level": 7,
         "state": "working",
         "subtags": [
             "email"
@@ -1263,6 +1265,7 @@
     },
     "gossa": {
         "category": "small_utilities",
+        "level": 3,
         "state": "working",
         "url": "https://github.com/YunoHost-Apps/gossa_ynh"
     },
@@ -1337,7 +1340,7 @@
     },
     "halcyon": {
         "category": "social_media",
-        "level": 7,
+        "level": 8,
         "state": "working",
         "subtags": [
             "microblogging"
@@ -2100,7 +2103,7 @@
     },
     "mobilizon": {
         "category": "social_media",
-        "level": 8,
+        "level": 6,
         "state": "working",
         "subtags": [
             "events"
@@ -2304,7 +2307,7 @@
     "neutrinet": {
         "branch": "stable",
         "category": "wat",
-        "level": 6,
+        "level": 8,
         "state": "working",
         "url": "https://gitlab.domainepublic.net/Neutrinet/neutrinet_ynh"
     },
@@ -2792,6 +2795,7 @@
     },
     "pmwiki": {
         "category": "publishing",
+        "level": 7,
         "state": "working",
         "subtags": [
             "wiki"
@@ -3441,7 +3445,7 @@
     },
     "synapse": {
         "category": "communication",
-        "level": 0,
+        "level": 6,
         "state": "working",
         "subtags": [
             "chat"
@@ -3529,6 +3533,7 @@
     },
     "tiki": {
         "category": "publishing",
+        "level": 7,
         "state": "working",
         "subtags": [
             "wiki"