Fix wrong misspelling reports of fully capitalized words

Two flavors of words would be wrongly reported as misspelled
by the android spell checker when they are written in all
upper case letters:
- Words containing a quote or a dash or any other non-letter
- Words that need the first letter to be capitalized

Bug: 7659216
Change-Id: Ibc5d261945ffcbb8a858d4c73b7c62cef6671abf