Partial pick of Evernote's evernote/pootle@2f453d22

Pick note: These changes might be required by the following picks.

    The rest of the changes in that commit are either necessary or where
    later dropped or changed at Evernote.
Make #footer stick to bottom

Conflicts:
	pootle/templates/layout.html
URL cleanups in Evernote dropped code

Change last URL template tags using references to views to instead use URL
names.
Make #footer stick to bottom
Fix footer overlapping with the content on tall pages

Conflicts:
	pootle/static/css/style.css
Partial pick: Added 'Terms and Conditions' links to the footer

Pick note: Only picked the CSS styles.

Conflicts:
	pootle/templates/layout.html
Added delete method to <Directory> (fixed http://bugs.locamotion.org/show_bug.cgi?id=2776)

Conflicts:
	pootle/apps/pootle_app/models/directory.py
Used iterator to avoid filling the internal queryset cache
Let's use the name `resource` for clarity

Pick notes: Also did additional changes in the view and template to
    completely switch to the new naming.

Conflicts:
	pootle/apps/pootle_translationproject/templates/translation_project/overview.html
	pootle/apps/pootle_translationproject/views.py
Minor change to ease picking next commit

Change comes from evernote/pootle@11508964.
Styling improvements/fixes (main page, header)

Conflicts:
	pootle/static/css/style.css
	pootle/templates/_main_tabs.html
	pootle/templates/home/base.html
Minor change to ease picking next commit (again)

Change comes from evernote/pootle@11508964.
Remove second column on overview pages

Note: this doesn't remove any underlying code that gathers data

Pick note: This drops important bits of our UI that we need to get back:

    - Descriptions (instructions)
    - Actions
    - Goals
    - Tagging

Conflicts:
	pootle/apps/pootle_project/templates/project/overview.html
	pootle/apps/pootle_translationproject/templates/translation_project/overview.html
	pootle/static/css/style.css
	pootle/templates/languages/overview.html
Restore breadcrumbs in main-translate mode

Conflicts:
	pootle/templates/main_base.html
Removed redundant rehash of labels

Conflicts:
	pootle/templates/admin/_tabs.html
	pootle/templates/languages/_tabs.html
	pootle/templates/profiles/_tabs.html
	pootle/templates/projects/_tabs.html
	pootle/templates/translation_projects/_tabs.html
Deleted extra code for checkig permissions during suggestion rejecting (evernote/pootle#11)

Pick note: See evernote/pootle#11.

Conflicts:
	pootle/apps/pootle_store/views.py
Minor cleanup: Add missing blank line
Show the unified 'last action' message on home and overview pages

In addition to that, try to display first and last name of the person, then fallback to the username

Pick note: We have changed the get_submission_message in Submission, so
  merging together the two codebases was somewhat problematic.

Conflicts:
	pootle/apps/pootle_statistics/models.py
	pootle/templates/home/home.html
Render empty stores in semi-transparent way

This includes moving the outer <tr>..</tr> tag from table.html into
_table_row.html template so that similar logic is not spread across multiple
templates

Pick note: Instead of moving the outher <tr>..</tr> tag from table.html into
    _table_row.html template we keep it in the original template to avoid
    complicating things. Anyway the whole contents of _table_row.html will
    be moved into table.html in a following commit.

    Also removed filter:alpha(opacity=65); from CSS since we no longer use
    that syntax.

Conflicts:
	pootle/templates/core/_table_row.html
Add 'suggestions' column to language and project overview pages

Conflicts:
	pootle/apps/pootle_language/views.py
	pootle/apps/pootle_project/views.py