remove html output from rest
Close context at end of REST request to community

- Following advice from Richard Rodgers at OR14
DS-1986 Get new context each time, close in finally, for all REST methods
Merge pull request #569 from bram-atmire/dspace-4_x

[DS-2060] Extended SOLR commit duration due to SpellCheckComponent ("Did you mean")
Merge pull request #567 from peterdietz/rest4x

(For 4.x branch) DS-1986 REST to use new context for each request
[DS-2035] fixes: dim crosswalk is missing values for metadatafields with more than one value for the same language
DS-1947: Remove reference to missing file

The missing file, seems to be an Institution specific file.

The missing file in question m-tweaks.js