New transaction types and fixes

Today's exciting update is two new transportation transaction types for X12 types 753 & 754 and some UI tweaks

Changelog

• added: 753 & 754 transaction types
• improved: Guideline code entry now automatically focuses the next element
• improved: Guideline path search returns more accurate results
• added: Warning if you have unsaved guideline changes and navigate away
• added: X12 identifiers to segments and loops in Guideline display
• improved: Validation errors now show only the broken path, not the full path
• improved: Rules editor validation error are more descriptive