changes in style for "add issue" button
Merge branch 'master' into release_sprint_5

Conflicts:
	src/issues/templates/issues/issue_list.html
	src/ocd/static/new_style-rtl.css
prepare branch for sprint 6 (comment out unverified changes)
Merge branch 'master' into release_sprint_5
added name field to Invitation model
English site css.

Remove new-style css and combined to 1 css.
Add style.css for english.
Added csv import sample file.
Some styles.
Some admin layout modification (list, sort, filter).
Redesigned meeting participants form template.
Some trello issues with invitations & existing invitations.