document that instances nneed to be big

[12rambau]

MSPA and other GWB related command are expensie in term of resources. If one user starts the application directly from the application interface, then it's always starting with a t1 with very limited resources.

It should be mentioned in the documentation that the instance need to be started before the launch (m4 at least)

[vogtpet]

Suggestion: the GWB_APP could be constrained to small images (i.e. maximum dimension 2000 x 2000 pixels) that work fine with the default t1 instance. This would allow the user to experiment with the various GWB modules first to get an idea what they do and what can be expected. Once the user has found a suitable setup, any larger images should then be processed with the GWB cmd-line module having chosen an appropriate instance.