Only upload 10 items per resource to GitHub [WEB-1832]

The idea here is that users should never be confused about whether or
not our full dataset is in GitHub. It should be immediately obvious.

Author: IllyaMoskvin

app/Console/Commands/Dump/DumpUpload.php

@@ -53,7 +53,7 @@ public function handle()
         $this->shell->passthru("for dir in %s/json/*; do
             if [ -d \$dir ]; then
                 mkdir %s/json/$(basename \$dir)
-                for file in $(ls -p \$dir | grep -v / | head -100); do
+                for file in $(ls -p \$dir | grep -v / | head -10); do
                     cp %s/json/$(basename \$dir)/\$file %s/json/$(basename \$dir)
                 done
             fi