Changes to work for ISO 8601 date formats - Y-m-d
Thomas: Corrections to strings
New manual pages for supplier tendering
Fix bugs in tendering
Fix bug in allowed modules. Ensure that no modules are allowed in supplier only logins
Phil: Change case of some variable names
Merge pull request #16 from fahadhatib/develop

Manual for supplier tendering.
Merge pull request #15 from timschofield/develop

Date format, string changes, and variable names.