Add clarification of how to set force_hostname

The original instructions told the user to log into Discourse Admin settings in order to set the force_hostname parameter so that the email validation URLs would be correct.  However, it is not possible to log in until email is validated.   This commit adds instructions for setting force_hostname through the console.
keep French l10n up to date
lru cache added
spring config
inflector backport
slug column for topics, for the performance
bug fix
slug memoization in the table
bug fix
translation accelerator
This patch probably belongs in AR discussing with rails team
track incoming links, amend share link to include user
fix pm styling
Merge pull request #760 from ZogStriP/keep-french-l10n-up-to-date-2013-04-23

keep French l10n up to date
cs translation update
Add contact_email to site settings
Show heatmap for views in suggested topics
Send contact_email along with version check
Send topic_count with version check requests
Merge pull request #761 from kubabrecka/cs_update39

cs translation update
Merge pull request #759 from darrennix/patch-2

Add clarification of how to set force_hostname