[TASK] Use new TypoScript location

BREAKING CHANGE! Installing this change will require page templates to be selected anew; until this is done the page's configuration and FE rendering will be broken.

You can bring back the old behaviour using this TypoScript:

```
plugin.tx_fluidpages.collections.fluidpages < plugin.tx_fluidpages.collections.fluidpages_bootstrap
plugin.tx_fluidpages.collections.fluidpages_bootstrap >
```
Merge pull request #4 from NamelessCoder/typoscriptpath

[TASK] Use new TypoScript location
[FEATURE] Implement PageController

Although the bodies of functions are, so far, empty - the Controller class will be a very nice addition for future expansions. Also corrected are references to TypoScript settings which are now fetched from `plugin.tx_fluidpagesbootstrap.settings` without having to use `v:var.typoscript` in the templates.
[TASK] Improve error page
Merge pull request #6 from NamelessCoder/errorpage

[TASK] Improve error page
[TASK] Change an integer insurance from round() to ceil() for consistency
Merge pull request #5 from NamelessCoder/controller

[FEATURE] Implement PageController