Added image cropper widget for user images.

* Also added a validator for processed images.
Fixed quotes in zh-tw.py
Merge pull request #355 from aviraldg/fix-1295

Added string escapes in l10.js (fixes #1295)
Merge branch 'master' of git://github.com/graeme-f/eden
#1392 Support for joining table more than once using alias and filter in add_component
S3ContingencyTable: Get custom layer labels from report options.
Merge branch 'master' of https://github.com/liezl200/eden
PDF Codec: don't include extra_fields.
Merge branch 'master' of git://github.com/flavour/eden
Several fixes, cleanup.
Disable weak unit test, cleanup component table aliasing, other fixes.
HRM/Org import/menu tweaks. Show # Recipients when sending msg to multiple.
Merge branch 'master' of git://github.com/nursix/eden
Created a script to check translation files for possible character escape issues.
Restrict message options to those available for a person & redirect if none are.
Merge pull request #358 from aviraldg/checkesc

Created a script to check translation files for possible character escap...
Fixes/Tweaks to HRM/Org based on IFRC UAT: Stay within Tabs where possible. Fix boundary for SG, Fix empty CheckboxesWidget, Add Facility Type button, Ensure XLS output doesn't crash when sheet_name too large
Complete inv_warehouse_rheader => inv_rheader, revert re-introduction of _next (dangerous for its side-effects), remove unnecessary delete-action override instead to stay in tab.
merge aviraldg: OSM settings fix
Fix autodelete: the linked table may use an alias, so re-define.