Reuse WSF_LAUNCHABLE_SERVICE code as ancestor of WSF_DEFAULT_SERVICE_I
Note that this way, it is easy to redefine `launch' in order to customize the launching instruction if needed (thinking about testing...)
This might breaks some code since it adds a `launch' feature, but it is easy to fix and unlikely to happen often.
Merge branch 'master' of https://github.com/EiffelWebFramework/EWF
Removed unused local variables.
Added WSF_REQUEST.has_execution_variable (a_name): BOOLEAN
Since the related value can be Void.
removed unused local variable
code cleaning
Added a way to customize the place to store temporary uploaded files
Added WSF_UPLOADED_FILE.append_content_to_string (s: STRING) which can be used to get the content of the uploaded file.
fixed implementation of WSF_UPLOADED_FILE.append_content_to_string
use EWF_tmp- prefix for temp uploaded file name.
removed unused local variable
Display suggestion is now configurable.

Commit 665772bda213e838b3c092075a386ee3b846b0be forces to display only
suggestion for the request's method (this was not the case before).

This commit allows to configure this behaviour: it keeps the current behaviour
but also allows to use the other behaviour where the suggestion is displayed
for each request method (as it was before).
Merge pull request #55 from oligot/suggestion-method

Display suggestion is now configurable
Fix the CSS so that we don't see the scrollbar

This commit fixes the CSS so that we don't see the scrollbar anymore.
It just removes the width: 100% property on the div elements.
Merge pull request #56 from oligot/scrollbar

Fix the CSS so that we don't see the scrollbar
Merge https://github.com/EiffelWebFramework/EWF