Update issue templates (#972)

* Update issue templates

Take advantage of GitHub's new feature to add multiple issues templates. The FR template is the gh default, the bug report is our old template with a few modifications.

* Remove old template

Signed-off-by: mueller-ma <mueller-ma@users.noreply.github.com>

.github/issue_template.md → .github/ISSUE_TEMPLATE/bug-report.md

+---
+name: Bug report
+about: 'Create a report to help us improve '
+
+---
+
 <!-- Please search the issue, if there is one with your issue -->
 
 ### Actual behaviour
@@ -24,7 +30,7 @@ Describe us what should happen
 * Device model: 
 * Stock or customized ROM: 
 * App version <!-- Can be found under "About" -->: 
-* Build flavor <!-- Play Store = "Full", F-Droid = "Foss", GitHub has both apks. If self-built and you haven't changed the flavor, it's Foss -->: 
+* Build flavor <!-- Play Store and GitHub = "Full", F-Droid = "Foss". If self-built and you haven't changed the flavor, it's Foss -->: 
 * Device language: 
 
 #### Server
@@ -45,13 +51,17 @@ Insert your log here
 
 #### openHAB Server log
 ```
-Insert your log here
+Insert your log here. If you have installed openHAB via `apt-get`, the log is located under `/var/log/openhab2/openhab.log`
 ```
 
 #### Reverse Proxy log
 ```
-Insert your reverse proxy error log here
+Insert your reverse proxy error log here.
+For nginx: `/var/log/nginx/error.log`
+For Apache 2: `/var/log/apache2/error.log`
 ```
 ```
 Insert your reverse proxy access log here
+For nginx: `/var/log/nginx/access.log`
+For Apache 2: `/var/log/apache2/access.log`
 ```

.github/ISSUE_TEMPLATE/feature_request.md

+---
+name: Feature request
+about: Suggest an idea for the openHAB client for Android
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.