Czech image transfer string fix
Update spanish translations
Merge pull request #797 from kruks23/translation

Update spanish translations
Merge pull request #794 from svetlemodry/development

Czech image transfer string fix
inject ui callback into running mam query
fixed another break continue bug
don't include empty fingerprints in list of otrfingerprints
more null checks for otr fingerprints
get rid of special self presence object and incorporate that into roster
updated readme and xep list
Add support for XEP-0191 (Blocking command)

Fixes #791

Squash of commits:
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Merge pull request #796 from SamWhited/xep0191

XEP-0191 Support
Fix NPEs in blocking code
Merge pull request #802 from SamWhited/blockingfix

Fix NPEs in blocking code
Simplify roster handling code

Merge result handling code into IqParser

Fixes #20
made method private that is no longer required to be public
Merge branch 'SamWhited-verifyServerIqs' into development
Add more server compatibility info.

Hide server info behind a checkbox.

Add XEP-0352 support to the server info list

Add XEP-0237 to server info list

Add XEP-0352 support to the server info list

Add MaM and Blocking to the account XEPs list

Also add a toggle button to hide some of the list
Rebase on current codebase

Make MAM string more descriptive

Change show more button to checkbox menu item

Shorten `MAM (History)' to `MAM'

Order XEP list and hide all by default

Supress warning (which is wrong anyways)

Change `Show more' to `Show more info'
Merge pull request #804 from SamWhited/server-info

Server info
Remove old JID validator