move vue and vue-calendar-heatmap to webpack (#10188)

- unvendor vue and vue-calendar-heatmap
- remove unused moment.js leftover from previous heatmap version
- ensure webpack loads the full version of vue
- fix vue devmode warning related to 'searchLimit' type

I wanted to name the chunk heatmap.js but adblockers don't like that
filename [1].

[1] 3899d5dff3/easyprivacy/easyprivacy_general.txt (L2095)

package-lock.json

@@ -10255,6 +10255,11 @@
         "irregular-plurals": "^2.0.0"
       }
     },
+    "popper.js": {
+      "version": "1.16.1",
+      "resolved": "https://registry.npmjs.org/popper.js/-/popper.js-1.16.1.tgz",
+      "integrity": "sha512-Wb4p1J4zyFTbM+u6WuO4XstYx4Ky9Cewe4DWrel7B0w6VVICvPwdOpotjzcf6eD8TsckVnIMNONQyPIUFOUbCQ=="
+    },
     "posix-character-classes": {
       "version": "0.1.1",
       "resolved": "https://registry.npmjs.org/posix-character-classes/-/posix-character-classes-0.1.1.tgz",
@@ -15033,6 +15038,16 @@
       "integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==",
       "optional": true
     },
+    "v-tooltip": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/v-tooltip/-/v-tooltip-2.0.3.tgz",
+      "integrity": "sha512-KZZY3s+dcijzZmV2qoDH4rYmjMZ9YKGBVoUznZKQX0e3c2GjpJm3Sldzz8HHH2Ud87JqhZPB4+4gyKZ6m98cKQ==",
+      "requires": {
+        "lodash": "^4.17.15",
+        "popper.js": "^1.16.0",
+        "vue-resize": "^0.4.5"
+      }
+    },
     "v8-compile-cache": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
@@ -15217,6 +15232,21 @@
         "core-js": "^3.6.1",
         "gsap": "^3.0.4",
         "vue": "^2.6.11"
+      },
+      "dependencies": {
+        "vue": {
+          "version": "2.6.11",
+          "resolved": "https://registry.npmjs.org/vue/-/vue-2.6.11.tgz",
+          "integrity": "sha512-VfPwgcGABbGAue9+sfrD4PuwFar7gPb1yl1UK1MwXoQPAw0BKSqWfoYCT/ThFrdEVWoI51dBuyCoiNU9bZDZxQ=="
+        }
+      }
+    },
+    "vue-calendar-heatmap": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/vue-calendar-heatmap/-/vue-calendar-heatmap-0.8.4.tgz",
+      "integrity": "sha512-Hx7OYBY1ghUIxKmFIIzpLT4XlcrwnI3WpadJEj/sKj5quoxwEuSDKmf94v0zWOHeQ/2CrB1G66geaKR/O56+OQ==",
+      "requires": {
+        "v-tooltip": "^2.0.0-rc.32"
       }
     },
     "vue-hot-reload-api": {
@@ -15238,6 +15268,11 @@
         "vue-style-loader": "^4.1.0"
       }
     },
+    "vue-resize": {
+      "version": "0.4.5",
+      "resolved": "https://registry.npmjs.org/vue-resize/-/vue-resize-0.4.5.tgz",
+      "integrity": "sha512-bhP7MlgJQ8TIkZJXAfDf78uJO+mEI3CaLABLjv0WNzr4CcGRGPIAItyWYnP6LsPA4Oq0WE+suidNs6dgpO4RHg=="
+    },
     "vue-style-loader": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/vue-style-loader/-/vue-style-loader-4.1.2.tgz",