Merge pull request #13 from jsilvestre/master

Minor improvements (refactoring)
Remove some scories of previous build system
Email action, first step
Merge pull request #14 from clochix/master

First step of email actions
Use arrays of addresses in message headers
Merge pull request #15 from clochix/master

Use arrays of addresses in message headers
Upgraded: dependencies
Fixed: loading indicator was displayed when no account was selected
Added: basic search