PmSmart: Enable skip handling comments

[ckunki]

Entering comments via web UI takes quite some time.

If a specific user does not use comments for recorded times at all, then WR should enable this user to configure WR to ignore all comments.

If WR ignores comments then web UI can skip transfer of comments and hence will execute faster.

[ckunki]

How about a property in .whiterabbit.properties?

pmsmart.transfer.comments = false

[kaklakariada]

Sounds good to me!

[ckunki]

Is this a mandatory value?

Interface PluginConfiguration, provides only the possibility to ask the configuration for mandatory values, but not for optional ones. And in my eyes pmsmart.transfer.comments would rather be an optional configuration.

Two options:

1. enhance interface to contain a method also for optional values or create an additional interface
2. declare option pmsmart.transfer.comments as mandatory in spite of my gut feelings

[kaklakariada]

Until now there was no need for optional parameters ;-). Please add a method to PluginConfiguration, returning an Optional.

[ckunki]

I added a method for optional parameters.