Add event emitter

See merge request arsnova/arsnova-lite!217

Resolve "Some bugs concerning the counting badge"

Closes #258

See merge request arsnova/arsnova-lite!218

Push RoomDeleted event when creator delets it.
React to RoomDeleted event in RoomList.

Use type 'email' on mat input

Closes #270

See merge request arsnova/arsnova-lite!215

Fix room edit errors

See merge request arsnova/arsnova-lite!216

Fix null check
Remove console.log stmt

Change default theme and theme order

Closes #266

See merge request arsnova/arsnova-lite!213

Resolve "Icons and their effects are confusing"

Closes #256, #259, and #261

See merge request arsnova/arsnova-lite!212

Add badge as comment counter

Closes #257

See merge request arsnova/arsnova-lite!209

Show number of comments
When comment list is filtered, show number of filtered comments

Fix long loading

Closes #254

See merge request arsnova/arsnova-lite!208

Update README.md

See merge request arsnova/arsnova-lite!211

Update de.json

See merge request arsnova/arsnova-lite!210

Refactor comment list

Closes #253

See merge request arsnova/arsnova-lite!207

Add sync job to github

See merge request arsnova/arsnova-lite!205

Update packages

See merge request arsnova/arsnova-lite!206

Release v1.1.0

See merge request arsnova/arsnova-lite!204

- Interaction via WebSockets
- Voting on comments by participants
- New attributes: read, favorite, correct
- Search function
- Sorting and filtering
- Presentation mode with color indication for participants
- Threshold to hide negative comments from participant and lecturer

- Add Progressive Web App functionality for a 'native app' feeling
- Theme Manager with 4 Themes to chose from
- Designimprovements

Fix comment loading for export

Closes #252

See merge request arsnova/arsnova-lite!203