Align frontend-version with frontend-m-p prerequisite of 3.1.0

[batmat]

1.3 was already having a prerequisite on Maven 3.1.0.

So, updating pom.xml to reflect and bumped the plugin to latest version.

@reviewbybees esp. @tfennelly @scherler @kzantow @michaelneale

[ghost]

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[michaelneale]

no linked ticket? what is this about?

[batmat]

@michaelneale this update is not bug driven, hence why no JIRA filed. More a general plugin bump. I initially had this in #54 and finally decided on separating the frontend-m-p and prerequisite part for mainly a review by the BO team, as this is probably the main and only place this plugin is used.

I can file an issue if it's deemed necessary, though.

[michaelneale]

ah ok - not sure I have much to add, doesn't seem to be a bad idea. @tfennelly may have some thoughts though. Most people use a much newer version of maven anyway if I read it correctly.

[jglick]

Fine AFAIK. @stephenc would probably know why 3.0.4 was chosen as a baseline.