fix level selection in selected species
use standard link format for synonyms/phenotypes
Use actual level in groups/orthologs/siblings requests. Close #43.
Add links to single group display into group title, siblings section. Close #27.
Add home link to OrthoDB logo. Close #33.
Fix species lookup label
Add Clear All action. Close #34.
Allow to remove individual items from selected species. Close #35.
Single mouse click expands tree folder. Close #45.
Single click selects level in selected species tree. Close #46.