fix sent invitations screen
Merge pull request #95 from christianwach/preserve-object

fix sent invitations screen
Readme
Bumps version numbers to 1.0.25
Fix for email addresses with plus sign

Gmail email addresses containing plus signs cause problems with
taxonomy terms and taxonomy searching. This fix stores + as .PLUSSIGN.
in the database as a workaround.

Props @dcavins

see 26c22b7fc2

Fixes #96
Readme
Updated iconography

Moved most of the functional icons to a sprite.
Readme update
Minor adjustments to group list css

Fixes problems with display of really long group names and adds a
one-column version of the list for smaller screens.
Readme update