Refactored reports, added plant status report
Change "Cancel" to "Back"

The cancel link on all details pages has been replaced with a back link
which goes to -1 of the browsers history.
Added width="100%" to tables

Initially added, then removed, then added now. The tables weren't
automatically reformatting when resized.
Cosmetic enhancements

Standardised all the headings. Added the job id/plant id/inventory id to
the headings where applicable.