add latex syntax tips in alpha markdown formatting guide
Merge pull request #545 from jay-hodgson/SWC-811

SWC-811: add latex syntax tips in alpha markdown formatting guide
SWC-775 Update regex for tables' explicit header and updated tests
Merge pull request #543 from heidiso/develop

SWC-804/743 Created new parser to detect/extract/protect synapse widget syntax
SWC-775 Fix tables' extra column issue
Merge branch 'swc_775_update' into develop
SWC-775 Fix test for tableParser