Merge pull request #624 from Grunthos/master

Strings
Update strings.xml
Update strings.xml

2 strings added
Merge pull request #626 from gvmelle/master

Update strings.xml
Merge pull request #625 from bitigchi/patch-5

Update strings.xml
Update strings.xml
Merge pull request #627 from Imkal/patch-6

Update strings.xml
Updated Spanish strings
Be a little more careful about negation in search strings

"foo-bar" will now search for "foo bar" (meaning "foo AND bar")
"foo -bar" will now search for "foo -bar" (meaning "foo AND NOT bar")

This problem was highlighted by titles with hypenated words, like
Notre-dame, resulting in negations: "notre-dame" -> "notre AND NOT
dame". We now allow negation, but only if preceded by a space (or at
start).
Merge pull request #628 from jgaldo/patch-1

Updated Spanish strings
Merge github.com:eleybourn/Book-Catalogue
Cleanup of FR strings
Added recent changes