Properly use global this to export moment

This is one issue encountered in strict mode.

Related to #1179
Merge pull request #1265 from ichernev/feature/moment-strict-mode-compat

Properly use global this to export moment
Ensure module.config() returns an object
Fix & improve estonian locale
Merge pull request #1280 from st3redstripe/develop

Ensure module.config() returns an object - for Dojo compat
Update readme.md

fix wiki syntax error
Merge pull request #1283 from yukulele/patch-1

Update readme.md
Merge pull request #1282 from ragulka/develop

Fix & improve estonian locale
make moment.js compatible with older version of requirejs
Merge pull request #1293 from vafada/develop

make moment.js compatible with older version of requirejs
Handle iso format where Z is prefixed with spaces

In response to #1290
Merge pull request #1294 from ichernev/bugfix/iso-format-z

Handle iso format where Z is prefixed with spaces