updates/changes to glider files
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Merge branch 'master' of git://github.com/NickAlmonte/marine-integrations into glider
Rolled back move of common particle parameters.
Changed internal timestamp to zulu time for ctdgv
Removed unused test files, updated engineering and flort glider test results with zulu timestamps.
Added parad zulu timestamps for testing.
Updated flord to include zulu format internal timestamps in results files.
Removed more unused engineering files.
Removed old backup metadata files.
Added metadata particle to engineering glider and updated tests.
Updated glider tests for engineering metadata particle.
Removed converting 0 lat/lon to NaN, and prepended zeros to allow conversion.
Merge pull request #184 from emilyhahn/glider

Glider Updates - ctdgv, dosta, flort, flord, parad, and engineering