GPII-733: Change magnifier step to 25.
GPII-736: Fixing save and apply button
GPII-736: Fixing minus and plus buttons for NVDA screen reader
GPII-736: Fixing the checkboxes for "more settings" in screen reader
region. 
All checkboxes are pronounced correctly by JAWS and NVDA screen readers.
GPII-736: Adding german and spanish for plus and minus text.
GPII-736: Adding german and spanish plus and minus text for
magnification adjuster.
GPII-839: Stop 'Full editor' link from performing save.
GPII-839: Make full editor a straight link.
GPII-736: Fixing aria-label for plus and minus labels.
Remove gpii-hide-element from adjusters css file.
Merge remote-tracking branch 'dimokas/GPII-733'

* dimokas/GPII-733:
  GPII-733: Change magnifier step to 25.
GPII-726: Fixing aria label for more and less button.
GPII-726: Small corrections (commas and magnifierHeading).
GPII-736: Delete tabindex attribute from plus and minus labels.
GPII-726: Translation into german. 
The translation includes:
- more speak text preferences
- less speak text preferences
- more magnifier preferences
- less magnifier preferences
GPII-736: Removing duplication for plus and minus labels.
Code migration about plusText and minusText to
gpii.adjuster.textfieldStepper.
Removing tabindex from textfields.
GPII-726: Translation into spanish.
The translation includes:
- more speak text preferences
- less speak text preferences
- more magnifier preferences
- less magnifier preferences
GPII-738: Fixing problems in headings.
The user of NVDA and JAWS can navigate through headings.
GPII-726: Removing some white spaces.
GPII-726: Restructuring code. Removing redundant code.
The function used for more/less toggle has been moved to
gpii.ariaUtility.
GPII-726: Removing whitespace.