Array mapping with FILTER expression adds spurious semi-colon

[ritchiecarroll]

Semi colon gets added to the end of the expression when mapping get written to a file - this causes a parsing error on load.

This only happens on Input Mappings, Output Mappings work fine.

Example filter expression against mappings:
FILTER Mappings WHERE TypeCategory = 'ECA' AND TypeIdentifier = 'VIPair'

[wbernest]

fixed bug in javascript