rename logo to avoid hardcoded company name

* rename all ippon-[xx] logos
* replace alt attibutes for these logo with messages defined in message
  bundle
Allow adding new pages with customizing with tatamiCustomization

* maps any request to /tatami/<subpath> to the jsp names <subpath>.jsp
Allow selecting the set of allowed themes in tatami.properties
Refactor theme preferences

* default theme list in Preferences
* new customization.properties file to keep tatami.properties filtered
  when setting properties in customization
Merge remote-tracking branch 'origin/master' into customization
Merge pull request #336 from godu/master

 Parcours de première connexion
Fix correct spelling
Fix template : add Bootstrap "btn" class
Merge remote-tracking branch 'origin/master' into customization

Conflicts:
	src/main/java/fr/ippon/tatami/web/controller/form/Preferences.java
Merge pull request #331 from PierreRust/customization

Customization
Fix bug on reply to status (#317)
Merge pull request #338 from PierreRust/fixStatusReply

Fix bug on reply to status (#317)
Fix bug on public group

* publics group where always read from cassandra as private groups
  because the publicGroup column was never read (but correclty written)
Merge pull request #344 from PierreRust/fixPublicGroup

Fix bug on public group
Corrected #337
Error in the default profile
Corrected D3/WRO4J/welcome message errors
Corrected code (return values, style...)
Remove thumbnail issue #346
Merge pull request #348 from hellsingblack/master

Remove thumbnail issue #346