Expression profile link followup

to address some followups for #2324:
Under Topography Map within Expression widget of genes
(Ex /species/c_elegans/gene/WBGene00015099#-1f-10)
- display mountains on the gene page. (for example, Mountain: 4)

Overview for Expr_profile page. (Ex /species/all/expr_profile/B0280.1)
- suppress RNAi. 
- PCR info renamed to "Location Information".

Thank you :)