Refactoring to wiki-client.

[almereyda]

analogue to #395
but for frontend / plugin / client logic.
SFW remains for reference server implementation + documentation.

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I have been reading through all (open) issues tonight to review and identify issues that concern the client side, plugins and presentation layer, some are even outdated / abandoned and could be closed. Then these ideas should be cross-referenced over at https://github.com/WardCunningham/wiki-client.

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The proposed list:

#159 Recover Early Revisions. Closed.
#160 Hiding or Removing History.
#171 Proper Escaping Before/After Edit
#176 Split Page and Other Exotic Edits
#188 Page Titles in Tabs, etc. Closed.

#214
#216
#230
#243
#237
#242
#245
#261
#274
#275

#312
#313
#317
#318
#319
#322
#335
#396

#218
#379
#391
#392

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Further tasks would be to cluster those issues into topics and mark them with labels as proposed at fedwiki/wiki-client#5 (comment).