refs #8557 Two questions to 2 suspicious places of code

Two places found after code review which look like wrong. Questions to code were placed after //!!! mark
Merge branch 'master' into feature/8557_SNSvsISIS
Refs #8723 add LoadIsawSpectrum algorithm
Refs #8723 add LoadIsawSpectrum algorithm
Refs #8816 add predict peaks to SCD interface
Refs #8816 move predictPeaks after UB
Refs #8816 add argument
Refs #8816 make params visible
Refs #8838 Prevent deletion of loaded workspaces.

This is consistent with the other routines in IDA.
Refs #8838 Disable option on plot when not available.
Refs #8816 fix dspacing params input
Refs #8816 longer interface and enable parameters by default
Refs #8281 Tidy up the S(Q,w) interface on C2E.
Refs #8281 Hook up data selector widget to interface.
Refs #8281 Fix tab order for binning input on S(Q,w) interface.
Refs #8991 Header removed
Refs #8723 test for reading vanadium spectrum
Refs #8723 correct text for wiki
Refs #8723 3 ways to specify instrument
Implemented algorithm. Refs #8994.

Implemented the algorithm.  But it has not been tested.