Add syncIndexes to all models JIC

[Martii]

• Possible recommendation as expires alias to expireAfterSeconds may need this to properly set values of an index that is created app side to sync with back-end.
• Increase event emitter.setMaxListeners to accommodate additional MongoDB usage with error (warning) thrown:

Index event triggered/trapped for User model
Index event triggered/trapped for Discussion model
Index event triggered/trapped for Strategy model
Index event triggered/trapped for Remove model
Index event triggered/trapped for Comment model
Index event triggered/trapped for Group model
Index event triggered/trapped for Flag model
Index event triggered/trapped for Vote model
(node:10567) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 open listeners added to [NativeConnection]. Use emitter.setMaxListeners() to increase limit

Applies to #1744 #1730 and followup for #1516 ... followup needed on mLab for index that's already there (which I didn't put there) ... COMPLETED mLab followup... no errs.

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NOTE:

• https://github.com/OpenUserJS/OpenUserJS.org/blob/491699c/models/script.js#L45-L47 not applied on all models. i.e. we are autoIndexing on other models allegedly with mongoose.

[Martii]

This is peculiar...

stdout log:

Starting application...
Index event triggered/trapped for User model
Index event triggered/trapped for Discussion model
Index event triggered/trapped for Strategy model
Index event triggered/trapped for Remove model
Index event triggered/trapped for Comment model
Index event triggered/trapped for Group model
Index event triggered/trapped for Flag model
Index event triggered/trapped for Vote model
...
Index event triggered/trapped for Sync model
Index event triggered/trapped for User model
Index event triggered/trapped for Discussion model
...
Index event triggered/trapped for Strategy model
Index event triggered/trapped for Remove model
Index event triggered/trapped for Comment model
Index event triggered/trapped for Group model
Index event triggered/trapped for Flag model
Index event triggered/trapped for Vote model
...
Index event triggered/trapped for Script model

... some multiple, identical, events triggered from mongoose ? Perhaps will resolve itself in a dep update down the line. Will make a mental note of this to check OUJS as well.