This was updated in the english translation a while ago, but was still
missing in some translations

When loading plugins, $lang might not be initialized yet, so use a
hardcoded error message instead, especially as this error should only be
displayed for the admin (and then fixed). This also removes the
previously localized message, it might be re-added as part of the new
extension manager.

Attention: $lang['register'] has been renamed to $lang['btn_register'],
anyone using that in any plugin or template should adjust it.

Ignore-this: 27ea52110bce929b2c61ed8faba67cfc

darcs-hash:20091016205526-c0bf4-35eba4e65d37980a667ba982f7f1ea5b7b07f01c.gz

Ignore-this: 7c8f68f29f52bc1d33fdb76ba98d2307

Removed unused string, move another string to the [js] subarray.

darcs-hash:20090812191138-6e07b-65db1b7560d437fb26a1a4d0095cd768b2c9af01.gz

Ignore-this: 52ad8f9da90d450cd42cb5fb589492bd

darcs-hash:20090128151137-c693b-440f1096a6074c7830e0100e96f5277e171efd60.gz

Ignore-this: 175d0e952b0a579161dcd147e374c561

darcs-hash:20090127164541-3166f-2bc3d1906c66c807f1fa6628121898dc091b21c4.gz

darcs-hash:20081230185728-6a3d1-33718529206b5bec2719819d8deccac3e532bf3f.gz