Fix usage of RestAPI::trigger

[ericonr]

This method expects its second parameter, 'exposure', to be 0 when using internal series, since in that case it's not necessary to send an updated acquireTime parameter. When in internal series mode, the Simplon API correctly waits for the acquisition to be complete to return, and the additional waiting implemented in RestAPI::trigger isn't necessary.

The conditional here checks for TRIGGER_MODE_INTE because TRIGGER_MODE_INTS and TRIGGER_MODE_CONTINUOUS both map to internal series trigger and don't suffer from this issue.

---

RestAPI::trigger has two ways it can be called, for Internal Series and Enable:

ADEiger/eigerApp/src/restApi.cpp

Lines 333 to 342 in 84b9392

	int RestAPI::trigger (int timeout, double exposure)
	{
	// Trigger for INTS mode
	if(!exposure)
	return put(SSCommand, "trigger", "", NULL, timeout);
	// Trigger for INTE mode
	// putDouble should block for the whole exposure duration, but it doesn't
	// (Eiger's fault)
	char exposureStr[MAX_BUF_SIZE];

[MarkRivers]

Looks good to me.