[Proteopedia] updates and bug fixes in Proteopedia

[Angel Herráez]

Dear Proteopedians,

Since June 19 up to today, we have been observing a series of bugs in the 
initial "Simplified model" display in Proteopedia pages, such as these:

- initial cartoon view not properly rendered (for proteins containing phospho- 
amino acids)
- beta strands and sheets not displayed in the initial simplified view 
(displayed as trace instead)
- beta strands and sheets displayed as a series of triangles instead of a 
ribbon with arrow point 

I am happy to say that all these are --hopefully-- fixed as of today.
It was all caused by a combination of issues: Jmol version (now updated to 
14.6), old and new states, and mostly the switch to using mmCIF models of 
assemblies from PDBe rather than the former pdb files from RCSB PDB.
Using assemblies is a decision aimed at offering by default the most 
biologically significant structure, and is based on the curation being done at 
EBI (hosting PDBe).

Thanks to all that helped Jaime and myself track and fix these bugs, 
including Bob Hanson and the team at EBI (Sameer Velankar et al).