Refs #9043 Interface UI file changed

The column resize bug has been fixed fixed (horizontalHeaderCascadingSectionResizes was true instead of false)

The new Edit menu has been created with Copy, Cut, Paste and Clear with their universally recognised shortcuts Ctrl-C, Ctrl-X, Ctrl-V, and Del
Refs #9043 Beginning connecting the Edit Menu

A clipboard object is now retrieved and stored when setting up the UI

Copy, Cut and Paste are wired up to basic handlers that simply print out at present in order to test their shortcuts.

Clear is implemented as expected, clearing text from highlighted cells when Edit->Clear or Del is pressed.
Refs #9043 Copy, Cut, Paste and clear all work

All of the edit menu now works as expected.

Copy/Paste functionality is compatible with MS Excel, and works in a similair way to Excels pasting too in regards to behavior when the user supplies a single cell target or a multi-cell target.

Selection mode has been changed to Contiguous to prevent problems occuring with multiple selections.
Refs #9043 Column hiding dialog

The new View menu contains 'Choose Columns...' which allows the user to select which collumns are hidden.

The dialog now uses Qsettings, so in future tickets, persistent options can be stored in there.
Merge remote-tracking branch 'origin/feature/9041_refl_gui_plotting'
Merge remote-tracking branch 'origin/feature/9132_Load_Surf_fails_in_win8'
Merge remote-tracking branch 'origin/feature/9143_windows_test_SCDPanel'
Merge remote-tracking branch 'origin/feature/8849_muon_analysis_validators'
Merge remote-tracking branch 'origin' into feature/9043_Refl_gui_Excel_style
Refs #9043 Updated window and collun selection window

Had to commit before merging master again as i'd run my conversion scripts. all that's changed is the time generated
Refs #9043 Merging master into branch

Merge remote-tracking branch 'origin' into feature/9043_Refl_gui_Excel_style

Conflicts:
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_gui.py
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_window.py
Refs #9043 Sorting out merge conflict with develop

Merge branch 'feature/9043_Refl_gui_Excel_style' into develop

Conflicts:
	Code/Mantid/scripts/Interface/ui/reflectometer/refl_gui.py