Correctly use the recipients language in emails for the body

Since we use the template for the emails the body sometimes was displayed in
the language of the user, who triggered the email, rather then the recipient.

In order to be able to do this correctly, we need to pass in the actual
language and use that, instead of the language from the template engine.

Fix #145
[tx-robot] updated from transifex
Merge pull request #146 from owncloud/issue/145

Correctly use the recipients language in emails for the body
[tx-robot] updated from transifex
[tx-robot] updated from transifex
Add activity if a file/folder is restored

Fix #148
Add relative date and time to the entries in emails

Fix #131
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
Merge pull request #151 from owncloud/issue/148

Add activity if a file/folder is restored
Merge pull request #153 from owncloud/issue/131

Add relative date and time to the entries in emails
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex
[tx-robot] updated from transifex