Fixing Shift-Selection

Setting grid.$$selectionPhase to false if multiple elements have been selected via shift.

Selected elements will now be properly removed from the grid.
Update koGrid-2.1.1.debug.js

fixed selection on moving elements
Update grid.js

fixed element selection
Update koGrid-2.1.1.debug.js
Update grid.js
Update koGrid-2.1.1.debug.js
added aggColumns

added method to check if there are any aggregate columns
fixed multi selection

multi selection now working with grouped columns
bugfix / typo

should be tested for > 0 instead of == 1
Update koGrid-2.1.1.debug.js
Update koGrid-2.1.1.js
various fixes

fixed shift selection
isGroupable

added property to columns that checks whether columns are groupable by
and filters the kgColMenu accordingly
changed default value

changed default value of isGroupable to false
searchColumn

Added property "searchColumn" to GridConfig, that specifies which column
to search in. You can still use the "Column: <search>" syntax, if you
want.
Merge remote-tracking branch 'Tehlyria/master' into fork-merges

Conflicts:
	build/KoGrid.debug.js
	build/KoGrid.nuspec
	koGrid-2.1.1.debug.js
	koGrid-2.1.1.js