Save commit message on keyup

Refs: #1775
Save commit message on blur
Remove commit message save on click

Clicking the save button will blur the commit message textarea and
trigger a save.
Amend width calculation for wide characters
Unicode fix for label
Fix saving comments
Re-order discarded.json for readability

Also splits the import-related into groups by import
Add KSJ2 tags to discard list

See http://lists.openstreetmap.org/pipermail/imports/2013-September/002133.html
add presets for natural=scree and natural=fell
Merge pull request #1818 from tyrasd/preset-natural-scree-fell

add presets for natural=scree and natural=fell
Cleanup style and null check
Merge branch 'hlaw-unicodefix'
Merge pull request #1794 from pnorman/ksj_discard

KSJ discard addition
Merge pull request #1783 from g-k/save-commit-message

Save commit message on keyup
Brighter color for GPX paths. Fixes #1626
Add boat rental. Fixes #1617