XWIKI-10605 : Add internationalization support to send emails from a Template * Add internationalization support
# This is a combination of 2 commits.
# The first commit's message is:

XWIKI-10510 : Add ability to send emails from a Template document containing a XWiki.Mail xobject
* Improve MailTemplateManager
* Minor styling improvements

# This is the 2nd commit message:

XWIKI-10510 : Add ability to send emails from a Template document containing a XWiki.Mail xobject
* Minor styling improvements
XWIKI-10605 : Add internationalization support to send emails from a Template * Improve MailTemplateManager * Minor styling improvements
[maven-release-plugin] prepare branch stable-6.1.x
[maven-release-plugin] prepare for next development iteration
[release] Incremented parent versions and/or version properties for the next development iteration
XWIKI-10545: Use the snapshots extension repository by default for snapshot builds
XWIKI-10532: When you edit a page in Wiki mode, you can't see the full number that you introduced in Autosave's minutes box.
XWIKI-10534: Add link to Wikis on the Profile menu on Flamingo.
XWIKI-10540: Default links in footer are blue on a blue background.
XWIKI-10503: Make the Administration sections from the left side narrower on Flamingo.
XWIKI-10537: Improve the display of Administration -> Import on Flamingo.
XWIKI-10534: Add link to Wikis on the Profile menu on Flamingo.
XWIKI-10415: blog space: the label is stuck on the textbox with flamingo skin.
XWIKI-10547: Different icons used in user profile vs. profile menu.
XWIKI-10536: Capitalize first letter for buttons when adding a tag
XWIKI-10530: Improve the display of Administration -> Users on Flamingo.
XWIKI-10531: Improve the display of the buttons when leaving a wiki on Flamingo.
XWIKI-10530: Improve the display of Administration -> Users on Flamingo.
XWIKI-10539: The "Annotations" button is displayed below "More actions".