Misc i18n fixes in the Buy Land floater:
* Appended a space after the colon in "Last modified:".
  It seems to have been mistakenly omitted by translators.
* Fixed timestamp (last modified date) value truncation.
* Proper truncation of region name, region type, estate name and estate owner text.
  o Use ellipses for truncation.
  o Where applicable, set tooltip to contain the uncut text.
  o Leave a few pixels of padding between the text and the floater right border.
* Fixed maturity rating icon overlapping the floater right border.
  The code that places it now takes into account possible region name text truncation.

Tested locales: EN, DE, PT.