1. add a new tab *TCM for BIO*
2. add new pages (*.html, *.js) of *TCM for BIO*
3. fix a small typo in *termsearch.js*
1. finish BIO to TCM chain (graph not yet added) 
2. fix small typo in various places
1. change tab *drug ID* to *drug name*, *target ID* to *target name*
1. change tab *gene ID* to *gene name*