make INDEXES_TITLE translatable (#1544 part 1)

Signed-off-by: Chris Warrick <kwpolska@gmail.com>
fix #1544 -- make INDEXES_* strings translatable

Signed-off-by: Chris Warrick <kwpolska@gmail.com>
put translated INDEXES_PAGES in kw

Signed-off-by: Chris Warrick <kwpolska@gmail.com>
Merge pull request #1545 from getnikola/indexes-translatable

fix #1544 -- make INDEXES_* strings translatable