* Added a bit of AMOS to copy existing strings and save a little translation effort
* Cleaned up fixed strings in several places
* Cleaned up some existing strings as required.
* Fixed install and upgrade code. Split upgrade into two parts (one for each table).
* Fixed fatal error caused by missing forms lib inclusion
* Added param types to forms.
* Converted file_get_content to use curl for URL's.
* Cleaned things up per coding style.
* Separated subscription management and form into separate files.
* Tidied up bennu inclusion to just where required.
* Lots of other small fixes as well.
AMOS BEGIN
CPY [calendar,calendar],[colcalendar,calendar]
CPY [actions,moodle],[actions,calendar]
CPY [never,moodle],[never,calendar]
AMOS END