Update workflows

Author: sashamishcheriakova

.github/workflows/download-translations.yml

@@ -14,6 +14,7 @@ permissions: write-all
 
 jobs:
   crowdin:
+    if: ${{ secrets.CROWDIN_PROJECT_ID != '' }}
     runs-on: ubuntu-latest
     steps:
       - name: Checkout

.github/workflows/upload-sources.yml

@@ -7,9 +7,11 @@ on:
       - master
     paths: ["en/**/*.*"]
 
+  workflow_dispatch:
+
 jobs:
   crowdin-upload:
-    if: github.event.pull_request.merged == true
+    if: (github.event.pull_request.merged == true) || (github.event_name == 'workflow_dispatch')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout