use i18n strings for first/last
Merge remote-tracking branch '52n/develop' into develop
rename permalink parameters (timeseries => ts, timespan => span)
Merge pull request #111 from ridoo/develop

Workaround for permalink problems on non-conformant HTML5 parsers
allow autoboxing when comparing int and string
Merge pull request #112 from ridoo/develop

allow autoboxing when comparing int and string
Merge remote-tracking branch 'upstream/develop' into distribution/uol
Activate concentration marker by default