Location information removed from translation files with msgmerge --no-location to decrease size of files and reduce diff size. Unfortunately there does not appear to be a setting in msgmerge or msgattrib to remove the extracted comments ("#.") from translation files. If you do know of such a switch, please let me know!
* added locale/en/LC_MESSAGES/statusnet.po to make it easier to start customizing English texts
* added notes to locale/README about customizing and how to disable languages you haven't customized
* renamed PO templates from *.po to *.pot to match general conventions and reduce confusion for people trying to find which file they're supposed to edit
