* Update web test methods in 'web/tests/'.
* Added an 'RDSchedCode' class in 'lib/rdschedcode.cpp' and
'lib/rdschedcode.h'.
* Implemented the 'ListSchedCodes' web method in
'web/rdxport/schedcodes.cpp'.
* Implemented the 'AssignSchedCode' web method in
'web/rdxport/schedcodes.cpp'.
* Implemented the 'UnassignSchedCode' web method in
'web/rdxport/schedcodes.cpp'.
* Implemented the 'ListCartSchedCodes' web method in
'web/rdxport/schedcodes.cpp'.
* Extended 'RDGetWebTime()' and 'RDGetWebDateTime()' functions to
support XML 'xs' namespace formats.
* Implemented '*_POINT' fields in the 'EditCut' web method in
'web/rdxport/carts.cpp'.
* Modified the 'RDCart::removeSchedCode()' method so as to treat
scheduler codes in a case-insensitve manner.
* Modified the return of the 'EditCut' web method to provide a full
<cutList> record in 'web/rdxport/carts.cpp'.
* Added a 'Type' control to 'web/tests/listcart.html'.
* Fixed a bug in 'web/rdxport/carts.cpp' that broke the 'ListCarts'
API call when no group was specified.
* Implemented the 'RDXPORT_COMMAND_AUDIOSTORE' web API call in
'web/rdxport/audiostore.cpp', 'web/rdxport/rdxport.cpp' and
'web/rdxport/rdxport.h'.
* Added an 'RDAudioStore' class in 'lib/rdaudiostore.cpp' and
'lib/rdaudiostore.h'.
* Modified the Desk Gauge widget in 'rdlibrary/disk_gauge.cpp'
and 'rdlibrary/disk_gauge.h' to use the 'RDAudioStore' class
[fixes GitHub issue #000035].
