create_topics: Add logic to show the create topic button to community members

(ActionItem2997)

Signed_off_by: Gabriela Navarro <navarro1703@gmail.com>
Signed_off_by: Gustavo Jaruga <darksshades@gmail.com>
create_topics: Corrections for merge-request.

(ActionItem2997)

Signed-off-by: Gabriela Navarro <navarro1703@gmail.com>
Merge branch 'master' into AI2993-display_content_plugin_content
Added plugin for mark comment as read

Signed-off-by: Leandro Nunes dos Santos <leandro.santos@serpro.gov.br>

(ActionItem2670)
Added info to better sharing in other networks

* Changed title tag

(ActionItem2610)
Added meta tags for OpenGraph and Twitter

(ActionItem2610)
Removed deprecated way to share on facebook

Also moved the addthis code to a partial

(ActionItem2610)
Removed unused method

Also included tests for meta tags and removed not-needed tests

(ActionItem2610)
Merge branch 'AI2997-create_topics_forum' of https://gitlab.com/unb-gama/noosfero
create_topics: saving number of access to db

Also fixed typo

(ActionItem2997)
 Merge branch 'signup_redirect_improvements' into 'master'

Signup Redirect Improvements

Add environment feature for choosing where to redirect the user after signup. The options are the same as the ones for the login redirection options existing today.

This feature takes in consideration that the usar may have to follow a confirmation URL recieved by eletronic mail.
extracted repeated code to a method
small-enhancement: changed name of attribute

(ActionItem2998)
pairwise - display filter for ideas and suggestions
Merge branch 'AI2942-pairwise_plugin' into stable
pairwise - do not allow users without permissions to manage ideas/suggestions
Merge branch 'AI2942-pairwise_plugin' into stable
#embed block: fix unit tests
Merge branch 'AI3031-community_track_embed_block' into stable
Merge branch 'master_colivre' into stable