TECA TECA_data

Added/updated test data for groups/ensembles

add test data for detect_nodes

Added test files for variables in groups

revert r158. note: this will be needed for the threaded tc detector

re-baseline event filter tests

re-baseline the bard app test after turning off periodic bc in lon

that data is a subset and not-periodic in lon

update baseline for bard test

we needed to switch to sort output by ar size since we component id is
non-deterministic in the cuda version

Rebase the tc_candiate test data

update the baseline for the connected components test

add test data for detect_nodes