Wip/libre reporting fixes (#4502)

* release 0.11.1 (#4279)

* Update dev version to 0.11.1

* remove + from version, make way for 0.11.1, upgrade webpack (#4277)

* Reporting compatibiilty fixes for Libre/Miaomiao

  * Allow sgv readings that are spaced 1 minute apart (report.js)
  * Calculate GVI using the actual time deltas of each individual sgv record (don't assume 5 minute gaps)
  * Calculate rapid rise deltas using time delta of the sgv record (don't assume 5 minute gaps)
  * Fix bug in GVIDelta calculation

* Bug fixes after testing

  * Each for loop was dropping the last 2 values of the array
      - firstly, due to using < instead of <= for the length comparator
      - secondly, the last value in the array is never checked, so it was not added

* Code clean ups

  * Commented out all unused references to RMS calculation
  * Removed unused totals variable
  * Formatted using project js-beautify rules

* Update npm-shrinkwrap.json