Update .gitmodules

Merge branch '154-wf-offset-modifier-display-loaded-wavefront-even-if-no-data-loop-input-is-received' into 'development'

Resolve "WF Offset Modifier: Display loaded wavefront, even if no data loop input is received"

Closes #154

See merge request wombat!15

Merge branch '163-valid-rectangles-filter-valid-array-does-not-get-retrieved-from-layout-file' into 'development'

Resolve "Valid Rectangles Filter: Valid Array does not get retrieved from Layout file"

Closes #163

See merge request wombat!14

GUI and data loop testing to be done.

Resolve "Harker O'Leary: Move Functions to Gradient"

Closes #140

See merge request wombat!12

Resolve "WF Offset: Error while loading from layout file"

Closes #167

See merge request wombat!11

WFOffset: Read Reffile from layout only it it exists.

Resolve "WF View: Check if valid wavefront exists before saving"

Closes #164

See merge request wombat!10