FLUID-5086: Moved show/hide string text in UIO SlidingPanel component to i18n
FLUID-5086: Added comment to describe strings
Merge remote-tracking branch 'heidi/FLUID-5086'

* heidi/FLUID-5086:
  FLUID-5086: Added comment to describe strings
  FLUID-5086: Moved show/hide string text in UIO SlidingPanel component to i18n