Audio Effects properties are in seconds instead of milliseconds

[leodf1]

Describe the bug: Property field of Audio Effects are seconds, instead of milliseconds

Steps to reproduce the behavior:

1. Add an audio effects to audio clip on timeline
2. Go to Properties for that Effect
3. Change any field titled in (ms)
4. Change affected by seconds, not milliseconds

Expected behavior: Change should be in milliseconds, instead of seconds

System Details:

• OpenShot Version [e.g. 2.4.3]: {{ log_context.openshot_qt_version }}
• Operating System / Distro: [e.g. Windows 10, Linux Mint 17.1]

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[leodf1]

For example: Expander Effect

Attack and Release properties are titled as 'ms' (as it should be). But the field value '1,00' is actually one second, not one millisecond.

So to set the property to 10 milliseconds, one needs to type 0,01, instead of 10,00.

And values of 1 - 9 milliseconds are impossible to enter because the field only accepts two decimal places. ie: 0,01 = 10 milliseconds minimum