Fixed a problem with how totals and filtering by period works

git-archimport-id: redhog@thalari.redhog.org/uWorkWork--main--0.1--patch-1
Fixed a problem with how totals and filtering by period works

git-archimport-id: redhog@thalari.redhog.org/uWorkWork--main--0.1--patch-2
Changed the timedelta regexp to be a bit more permissive

git-archimport-id: redhog@thalari.redhog.org/uWorkWork--main--0.1--patch-3
Sorted items chronologically

git-archimport-id: redhog@thalari.redhog.org/uWorkWork--main--0.1--patch-4
Sorted items chronologically

git-archimport-id: redhog@thalari.redhog.org/uWorkWork--main--0.1--patch-5
Fixed total time summation

git-archimport-id: redhog@thalari.redhog.org/uWorkWork--main--0.1--patch-6
Merge pull request #1 from redhog/redhog@thalari.redhog.org,uWorkWork--main--0.1

Redhog@thalari.redhog.org,u work work  main  0.1