GPU Calc: fix regression caused by recent isValid() change

Change-Id: I885a222bf8a7ca4275867585ccf067a1ba7822c7
GPU Calc: fix compilation failure on Windows due to missing NAN macro

Change-Id: I0d53dcf147a06f831120c5489b2975e42ea6120b
GPU Calc: fix typo in NAN macro

Change-Id: I34299e0fc692c2ab43fe0c1fffaada348742d19f
Clear column data array cache when the document content changes.

Change-Id: I09ffa455e79199e37ca6168753ec9ef4d5aa33dc
Change these parameters.

Change-Id: Ic70aaea461e3d007e394c67c33a766d70aa4e92c
Broadcast changes on undo / redo of cell range deletion.

Change-Id: I48141ca77277c2de5b3526358cfadb12e3f4fbdd
Don't forget to broadcast to chart objects.

Change-Id: I6d4d7cd2dc426134c108f1fbcf6e3c32ed4af88d
Not a good idea. This makes group calculation 5 times slower.

Change-Id: I954606a9d6d9b0fc66f2f3496e204c8e6496db88
Clear the cache here too.

Change-Id: I4dcc7244e508fcdf484b73dc843b21f4b0a18a73
Crasher fix. Check for NULL.

Change-Id: Iae1fa695ea0266e97ae367db71fe6a82e6a3da1d
Clear column data cache here too.

Change-Id: If3d9feb25d825806cb690d001872f1d0ff76466c
Clear the data cache here as well.

Change-Id: Id26dcf8146dc7a41ea9995ad4b1f89925c08004f