[ticket/9341] Correctly named template vars

PHPBB3-9341
[ticket/9341] Use U_PREVIOUS and U_NEXT in template files

PHPBB3-9341
[ticket/9341] Move create_topic and post into functional test case

create_topic and create_post are moved into functional test case
so that they can be used by other tests as well

PHPBB3-9341
[ticket/9341] Add tests for checking Next and Previous template vars

PHPBB3-9341
[ticket/10838] Updated RUNNING_TESTS.md

PHPBB3-10838
[ticket/9341] remove PREV_PAGE tpl var used for backward compatability

PHPBB3-9341
[ticket/9341] Follow the Next/Prev link in tests
follow the next/prev link and then assert if the page contains
its last post or not

PHPBB3-9341
[ticket/9341] Assert that page doesnt contain next or prev page posts

PHPBB3-9341
[ticket/11593] initialize $is_expr as null before being passed to get_varref

PHPBB3-11593
Merge remote-tracking branch 'dhruvgoel92/ticket/11593' into develop

* dhruvgoel92/ticket/11593:
  [ticket/11593] initialize $is_expr as null before being passed to get_varref
Merge remote-tracking branch 'dhruvgoel92/ticket/9341' into develop

* dhruvgoel92/ticket/9341:
  [ticket/9341] Assert that page doesnt contain next or prev page posts
  [ticket/9341] Follow the Next/Prev link in tests follow the next/prev link and then assert if the page contains its last post or not
  [ticket/9341] remove PREV_PAGE tpl var used for backward compatability
  [ticket/9341] Add tests for checking Next and Previous template vars
  [ticket/9341] Move create_topic and post into functional test case
  [ticket/9341] Use U_PREVIOUS and U_NEXT in template files
  [ticket/9341] Correctly named template vars
[ticket/11585] Make $auth_admin class property

$auth_admin is class property and used via $this reference in all
methods

PHPBB3-11585
Merge remote-tracking branch 'dhruvgoel92/ticket/11585' into develop

* dhruvgoel92/ticket/11585:
  [ticket/11585] Make $auth_admin class property
[ticket/10838] separate database used mentioned in unit tests

Separate database used for tests which is deleted each time
tests are run information is added to unit tests.

PHPBB3-10838
[ticket/10838] Fix missing data

PHPBB3-10838
[ticket/10838] Remove php 5.4 and builtin server references

PHPBB3-10838
[ticket/10838] Fix URL for wiki and remove irrelevant line

PHPBB3-10838
Merge remote-tracking branch 'dhruvgoel92/ticket/10838' into develop-olympus

* dhruvgoel92/ticket/10838:
  [ticket/10838] Fix URL for wiki and remove irrelevant line
  [ticket/10838] Remove php 5.4 and builtin server references
  [ticket/10838] Fix missing data
  [ticket/10838] separate database used mentioned in unit tests
  [ticket/10838] Updated RUNNING_TESTS.md
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10838] Fix URL for wiki and remove irrelevant line
  [ticket/10838] Remove php 5.4 and builtin server references
  [ticket/10838] Fix missing data
  [ticket/10838] separate database used mentioned in unit tests
  [ticket/10838] Updated RUNNING_TESTS.md