[ticket/284] Move phpBB requirement in composer.json

B3P-284
Merge pull request #285 from marc1706/ticket/284

[ticket/284] Move phpBB requirement in composer.json
[ticket/286] Use get_ methods for dbal properties

B3P-286
[ticket/283] Use newer pagination style in prosilver & support subsilver2

B3P-283
Merge pull request #287 from marc1706/ticket/286

[ticket/286] Use get_ methods for dbal properties
[ticket/283] Mark shortened message test skipped if trimmessage not available

B3P-283
Merge pull request #288 from marc1706/ticket/283

[ticket/283] Use newer pagination style in prosilver & support subsilver2