I fixed devtools addon for MapWriter.writeMapAsXml() error

[HaaiHenkie]

Hello,

I fixed an error with MapWriter.writeMapAsXml() in releaseAddon.groovy. I actually copied the solution from @EdoFro 's fork. Thanks for that.!

I also fixed a problem in checkAddon.groovy when the addon build mind map is in the Gradle plugin directory structure. If the addon build mind map is in src/addon it will check for scripts in src/scripts and subdirectories.

I have submitted a pull request: freeplane/addons#13

[HaaiHenkie]

Hi @dpolivaev, I merged my PR in the freeplane/addons repository. I created a draft release to attach devtools-v0.9.28.addon.mm and version.properties, since Github does not allow to attach these file types to a message like this. Could you publish them on Sourceforge? Or is that also something I could do myself? In that case you need to add me to the SourceForge project. My SourceForge user name is haaihenkie.

[dpolivaev]

Thanks for remembering me, I have added you to the source project as a developer. Can you please check if you have sufficient rights for the release? Please be careful not to occasionally remove the Freeplane releases lol.

[HaaiHenkie]

Hi @dpolivaev, yes I am a project member now, Thanks! Unfortunately I cannot upload anything to Files. You need to add me as a Release Technician.

[dpolivaev]

done

[HaaiHenkie]

Done as well! I will also update 3.3. Extend with add-ons