Add possibility to search for personal members (community, bronze)

See merge request t3o/t3o_membership!8

* Add sorting by lastname

Resolve "Add logos to membership"

Closes #15

See merge request t3o/t3o_membership!6

Resolve "Import from dropbox"

Closes #13

See merge request t3o/t3o_membership!4

Resolve "SQL error tx_t3omembership_domain_model_membership"

Closes #12

See merge request t3o/t3o_membership!3

Resolve "Update memberbadges"

Closes #7

See merge request t3o/t3o_membership!2

* Changes namespaces
* Bootstraps templates
* Use navigation instead of images
* Removes occurences of typo3_agencies extension

Feature/typo3 compatibility

Merge branch 'feature/typo3-compatibility' of https://github.com/TYPO3-typo3org/t3o_membership into feature/typo3-compatibility

The memberships can now get the option “no_filter” option. If this
option is enabled, the membershiptype is not visible as a filter. This
will be used for honorary members

Due to not being able to satisfy the "compare database"
in Install Tool, the option fulltext will be removed.