Making error message user-friendly (suggesting fix) and increasing recommended maximum upload size to 8 MB #4210
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Executive summary
This PR is independent of #4209 , but is a useful addition.
Backwards compatibility
No backwards compatibility issues are introduced.
Translation impact
No translation strings are added or deleted, but 2 strings are updated to be more precise.
Testing instructions
Apply #4209
Test 1: Make sure that your server's php.ini has a max_upload_size of 1M. Try installing an extension bigger than that, e.g. Admin Tools Core, K2, Community Builder etc. You get a generic upload error. Apply the PR and retry. You now get an error telling you that the upload failed and that your maximum upload limit is too small.
Test 2: Go to Extensions / Extensions Manager and click Warnings on side-bar. You should see the updated message and limit too.