Collective minor UX/UI changes

[Pinselohrkater]

Main Menu

• [x] Hamburger Menu fixes

Home Screen

• [x] Home Screen Title
• [x] Hamburger Menu Icon Color

Event List

• [x] Event List Navbar Icon Colors
• [x] Event List "Search" button should set focus to textbox when toggling it on

Event Feedback

• [x] User-Friendly Title
• [x] FontAwesome Icon not showing
• [x] Add validation - rating must be in 1..5; default is "0", which is rejected by backend.

Dealer List

• [x] Move "Search" out of drop-down menu directly into navbar

Personal Messages

• [x] Tapping "Personal Messages" when not logged on does nothing. Either open the login dialog or present an alert explaining the user they need to be logged on for this.

[lukashaertel]

Search bar behavior in general should be adjusted, currently the text field allows for multiple lines, which does under no circumstances return a result. This should be replaced with a close keyboard on enter behavior or similar.

[Pinselohrkater]

• [x] Home" Fragment Title now seems to be CID, not event_title. EF25 as an abbreviation doesn't make for a good title or menu item.
• [x] event_subtitle is missing from menu now.
• [x] Maps don't have a group header that shows their titles anymore.
• [ ] On slow devices (tested on a Galaxy S4 Mini) swiping between maps sometimes doesn't load the map, but shows a placeholder image

[Pinselohrkater]

• [ ] Opening the Nav Menu on the Home screen always shows the last tapped element as 'active', even though the user is on the home screen.