Fix revision range selector not loading.
Fix revision range selector not loading.

This change moves the target test first in the selectedSeries array param since the slider loads the first selected test.

BUG=#1481

Review URL: https://codereview.chromium.org/1343353004

sahiljain/catapult,sahiljain/catapult,catapult-project/catapult-csm,catapult-project/catapult,catapult-project/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult-csm,catapult-project/catapult-csm,benschmaus/catapult,sahiljain/catapult,catapult-project/catapult-csm,catapult-project/catapult,catapult-project/catapult-csm,catapult-project/catapult-csm,catapult-project/catapult,sahiljain/catapult,benschmaus/catapult,sahiljain/catapult,SummerLW/Perf-Insight-Report,0x90sled/catapult,benschmaus/catapult,catapult-project/catapult-csm,sahiljain/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,benschmaus/catapult,SummerLW/Perf-Insight-Report,catapult-project/catapult,catapult-project/catapult,0x90sled/catapult,0x90sled/catapult,catapult-project/catapult,benschmaus/catapult,SummerLW/Perf-Insight-Report