Generic comment support for properties files

[dragosv]

prop2po (http://docs.translatehouse.org/projects/translate-toolkit/en/latest/commands/prop2po.html) produces a completely different po than serge when processing properties files More specifically the comments are treated differently What .properties flavor is serge using (translate toolkit has these flavors: flex, java, mozilla, java-utf8, skype, gaia, strings)? To be even more specific to be a comment in serge it needs to start with #.comment=

And looking at this document from the http://docs.oasis-open.org/xliff/v1.2/xliff-profile-java/xliff-profile-java-v1.2.html they also consider any properties comment as comments

[iafan]

We added our own comment prefixes to be able to specify not only comments, but also context for each string. Having said that, it makes sense to add support for any generic comments (comment lines that have no special prefix can be treated as simple comments). For backward compatibility, this feature will be turned off.

[dragosv]

Would like to be able to exclude comments based on RegEx, as when using filtering with serge special comments have be added